The Perfect Murder (2014)

S4E6 The Devil Made Me Do It

Robert Schwartz, a devoted father of three, is found savagely murdered in his own home, his body bearing 32 stab wounds and a grotesque X carved into his throat. What initially appears to be a ritualistic slaying soon unravels into something far more sinister as detectives discover the killer is not a stranger, but someone dangerously close to the victim’s own family.