RT Article T1 The Unusual Suspects: Multiple-Perpetrator and Multiple Concurrent Victim Sexual Homicide JF International journal of offender therapy and comparative criminology VO 63 IS 9 SP 1705 OP 1725 A1 Higgs, Tamsin A2 James, Jonathan A2 Proulx, Jean 1956- LA English YR 2019 UL https://krimdok.uni-tuebingen.de/Record/1671049926 AB Sexual homicide typically implies a crime involving two people: perpetrator and victim. Thus, multiple-perpetrator and multiple concurrent victim sexual murderers are unusual, empirically invisible due to their exclusion from (or burying within) research samples. The present study examines 21 such cases of male sexual murderers having perpetrated at least one sexual homicide either together with a co-offender or alone but killing two victims at once. The aim was to investigate just how unusual, or not, these cases may be in relation to current scientific understanding of sexual murderers and their crimes. A descriptive analysis of offenses (co-offender and offender-victim dynamics, modus operandi) and offender characteristics is presented. Main findings, that multiple-perpetrator and multiple concurrent victim sexual murderers are not so unusual in that they are well conceptualized through application of the established sexualized, grievance, and rape murderer typology, are discussed in relation to clinical and empirical implications. K1 Sexual homicide K1 Serial murderers K1 Multiple perpetrators K1 Sexual offending K1 Sexualmord K1 Serienmörder K1 Studie DO 10.1177/0306624X19830854