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This chapter examines the principles behind law enforcement intelligence and identifies best practices established by other local and state law enforcement organizations. Then, it conducts a close analysis of the law enforcement intelligence process to determine, in light of best practices, how policies and procedures might be changed to better address law enforcement operations. A redefined intelligence process, as described in this chapter, will provide all participating agencies with a universal definition of law enforcement intelligence, will maintain and enhance community-policing efforts, and will establish a platform for contribution to the domestic intelligence cycle – which is essential for leveraging resources to detect and disrupt organized criminal organizations and terrorism.

This paper aims to examine the influence of police cultural knowledge on the investigation of violent serial crimes. Specifically, it aims to identify whether such knowledge impacts the way in which investigative techniques are implemented. Of particular interest is the police knowledge specific to victims of violent serial crimes.

A case study analysis of five incidents of serial murder and four incidents of serial rape in Australia was conducted. This included a qualitative analysis of cold case files from New South Wales Police, Australia. These data were triangulated with data obtained from interviews with detectives who had investigated incidents of serial murder and serial rape from that agency.

The police cultural knowledge relating to the victims of these crimes at the time of reporting negatively impacted the subsequent investigation of these cases. This resulted in a marked delay in the recognition of cases as part of a series of crimes and a delay in the allocation of investigative resources. This knowledge was informed by police experience in street policing, not from experience in the investigation of violent serial crimes.

This paper is limited to selected cases of serial crimes that occurred in Australia.

This research suggests that police cultural understandings of victims need to be reviewed and changed to include knowledge of serial crime victims, offenders and their crimes. Such changes could contribute to improved recognition of related crimes as being serial in nature, essentially opening the way to preventing further victimisation.

There is no research that considers the impact of police cultural knowledge on the investigation of violent serial crime, and its subsequent contribution to the length of time of the series of crimes remains unconnected.

Serious case reviews (SCRs) are one means of learning the lessons arising from adverse, salient incidents and tragedies. Adult Safeguarding Boards in England are expected to have an SCR policy and procedure, to commission SCRs, to abstract and act on the learning, and to monitor the resulting action plans.

Since SCRs reflect a wide range of processes, the authors undertook a general review, drawing on their experiences of conducting and contributing to SCRs. They chose to pose sets of question‐prompts regarding the commissioning process, the management of the process, the appointment of a chair and author, the terms of reference, information‐sharing, confidentiality, involving relatives and making findings public. The compliance of the process with human rights legislation is also considered.

Whilst the authors acknowledge the responsibility of organisations to promote continuous and cumulative professional learning, they do not promote SCRs as the sole means of learning about the ways in which professionals and agencies work together to safeguard adults at risk of abuse.

The paper challenges the perception that SCR can be streamlined, structured, codified, and constrained.

Purpose – The goal of this chapter is to assess the state of evidence examining and explaining trends and patterns in homicide clearances.

Design/methodology/approach – After reviewing the varying bodies of literature on homicide investigations and clearances, the author assesses the degree of support for the prevailing explanations of why some homicides are more likely to be solved than others. The author also use national data to evaluate several reasons for declining clearances.

Findings – Changes in the nature of homicide and deteriorating police–community relations are likely major contributors to declining clearance rates. The most consistent findings regarding patterns are the greater likelihood of clearance in homicides involving young children, contact weapons, residential locations, and killings not occurring in the course of another crime. Explanations relying on notions of victim devaluing generate the least support. There is considerable support for the legal factors approach and community-level explanations show promise. The findings regarding the role of forensic evidence are mixed. Smaller scale studies are beginning to help identify best practices for homicide investigations.

Originality/value – This chapter assesses several explanations for declining clearance rates and brings together divergent streams of research to summarize the current state of knowledge on homicide clearances, best practices in homicide investigations, and gaps to be filled by further studies.

The purpose of this study was to contribute to the evidence base by analysing the characteristics and motives of homicides involving acts of dismemberment.

The current study explored offence, victim and offender characteristics and the motives for 71 homicides involving dismemberment using open source data. All cases included in this study were investigated in the UK between 1970 and 2016. A non-metric multi-dimensional scaling procedure smallest space analysis (SSA) was used to explore the characteristics and motives derived from a content analysis of homicide data sourced online.

A distinction between expressive and instrumental characteristics was observable with three thematic regions identified: instrumental – defensive, instrumental – predatory and expressive – affective. Support was found for previously identified motives for criminal dismemberment, with defensive being the most common motive identified in 63% (N = 45) of the cases.

The implications of the findings are discussed with suggestions made for future research. The findings have practical implications for assisting law enforcement and forensic and clinical practitioners in further understanding offenders who engage in homicidal dismemberment. This includes aiding homicide investigations, in terms of supporting investigators to draw upon offence, victim and offender characteristics and motives for homicides involving acts of dismemberment. Differentiation between cases of dismemberment and understanding of motives also has practical implications for the development of interventions and treatment pathways for homicide offenders who dismember victims.

The purpose of this paper is to report a study of practitioner views on the 28-day homicide review process.

The research draws upon primary data from interviews with senior investigating officers (SIOs) engaged in homicide investigations and review officers tasked with reviewing homicides unsolved after 28 days.

The review process was perceived to be meeting the needs of the organization but adding little, or no direct value to SIOs. Despite this, there was agreement as to the potential value and necessity of the homicide review process. Issues such as the purpose and process of reviews were considered, with recommendations providing impetus for the Metropolitan Police Service (MPS) to review the use of reviewers commensurate with their expertise, the training and development of reviewers, and the aims, format and timing of a review.

The study involved the MPS, and its relevance to review processes elsewhere, whilst likely, is unproven. Further research could identify whether similar issues arise elsewhere, although the findings of this study could encourage other forces to undertake internal reviews of their own systems and processes to understand whether improvements could be made. Whilst over a third of the SIOs and Murder Investigation Team managers took part in the study, a fifth of the review officers were interviewed.

MPS should amend the objectives of a MCR to reflect the role they play in the prevention of miscarriages of justice. The MPS should conduct a skills analysis of existing staff. Reviewers should be appointed to cases within their sphere of expertise, and should all be qualified at Professionalising the Investigative Process (PIP) Level 3. The MPS should consider an arbitration process for contested review recommendations. The College of Policing should consider a PIP development programme for proactive SIOs. The College of Policing should review and support SIO continuing professional development opportunities within the MPS.

The findings are relevant to any police service currently undertaking 28-day reviews of unsolved homicide investigations.

The purpose of this article is to improve the use of evidence-based practice and research utilization in the offender profiling process. The use of offender profiling has been met with increasing resistance given its exaggerated accuracy. The “Investigative Journalist/Expert Field Micro Task Force” model, a collaborative method that incorporates offender profiling and is designed to address unresolved serial homicides, is introduced and evaluated alongside recommendations on attaining adherence.

The model was field tested in 17 instances. The measures used by the Federal Bureau of Investigation to gauge the usefulness of their case consultations, whether their input helped catch the offender, offer new leads, move the case forward, provide new avenues or give new ideas, were used to evaluate the model.

The model established likely patterns of serial murder activity among strangulations of women in Chicago, Cleveland, and Panama and resulted in convictions of suspects in Louisiana and Kansas City. This model is valuable when used to parse modern-day offenders from those who committed unresolved homicides as the latter display different behaviors that can make investigations difficult endeavors. Results from the field tests mirror those from the literature in that profiling alone did not result in the capture of serial killers. Instead, profiling was used in conjunction with other efforts and mainly as a means to keep the investigation moving forward.

Unresolved homicides are at a point of crisis and represent a significant but largely unaddressed societal problem. The success of this model may compel law enforcement to restore faith in offender profiling.

The purpose of this paper is to identify offender typologies based on aspects of the offenders’ psychopathology and their associations with crime scene behaviours using data derived from the National Confidential Enquiry into Suicide and Safety in Mental Health concerning homicides in England and Wales committed by offenders in contact with mental health services in the year preceding the offence (n=759).

The authors used multiple correspondence analysis to investigate the interrelationships between the variables and hierarchical agglomerative clustering to identify offender typologies. Variables describing: the offenders’ mental health histories; the offenders’ mental state at the time of offence; characteristics useful for police investigations; and patterns of crime scene behaviours were included.

Results showed differences in the offenders’ histories in relation to their crime scene behaviours. Further, analyses revealed three homicide typologies: externalising, psychosis and depression.

These typologies may assist the police during homicide investigations by: furthering their understanding of the crime or likely suspect; offering insights into crime patterns; provide advice as to what an offender’s offence behaviour might signify about his/her mental health background. Findings suggest information concerning offender psychopathology may be useful for offender profiling purposes in cases of homicide offenders with schizophrenia, depression and comorbid diagnosis of personality disorder and alcohol/drug dependence.

Empirical studies with an emphasis on offender profiling have almost exclusively focussed on the inference of offender demographic characteristics. This study provides a first step in the exploration of offender psychopathology and its integration to the multivariate analysis of offence information for the purposes of investigative profiling of homicide by identifying the dominant patterns of mental illness within homicidal behaviour.

The purpose of this paper is to explore the differences (if any) between serial and hard-to-solve one-off homicides, and to determine if it is possible to distinguish the two types of homicides based on offence behaviours and victim characteristics.

A sample of 116 Italian serial homicides was compared to 45 hard-to-solve one-off homicides. Hard-to-solve one-off homicides were defined as having at least 72 hours pass between when the offence came to the knowledge of the police and when the offender was caught. Logistic regression was used to predict whether a killing was part of a series or a one-off offence.

The serial killers targeted more strangers and prostitutes, displayed a higher level of forensic awareness both before and after the killing, and had more often an apparent sexual element in their offence. Conversely, the one-off homicides were found to include more traits indicative of impulsive and expressive behaviour. The model demonstrated a good ability (AUC=0.88) to predict whether a homicide belonged to the serial or one-off category.

The findings should be replicated using local homicide data to maximise the validity of the model in countries outside of Italy.

Being able to distinguish between serial and one-off homicides based on information available at a new crime scene could be practically useful for homicide investigators managing finite resources.

Studies comparing serial homicides to one-off homicides are scarce, and there are no studies explicitly trying to predict whether a homicide is an isolated case or part of a series.

Purpose – The purpose of this chapter is to explore homicide trends in Trinidad and Tobago, to describe the factors that impact the risk for homicide perpetration and victimization, and to discuss the effectiveness of strategies implemented by law enforcement agencies to prosecute homicide cases.

Design/methodology/approach – The chapter employs a detailed review of relevant literature to explore homicide trends and the strategies instituted to investigate and prosecute this criminal offense.

Findings – Our findings suggest that homicide victimization and perpetration is concentrated among young men of African descent, who reside in underprivileged communities with a high population density. Gang violence prompted by a narco-drug economy, coupled with gun violence, accentuates the risk of homicide perpetration and victimization. As homicide rates remained high, law enforcement officials in Trinidad and Tobago were ill equipped to investigate and make arrests in these offenses.

Originality/value – This chapter adds to the literature on homicide in Trinidad and Tobago by (1) showing that geographic and demographic factors structure homicide victimization and (2) exploring how the political economy of drugs in the Caribbean contributes to murder.