Granville Salvadore, BBA. LLB. (Hons.), MIT-WPU School of Law Research Intern, Centre for Crime Sciences and Forensic Intelligence ABSTRACT Serial-offender investigations frequently rely on behavioural similarity across offences, yet similarity alone cannot establish common authorship, identify a suspect, or support legal liability. This article develops a forensic decision-making framework for moving from behavioural linkage to investigative hypothesis, suspect relevance, and legally...