There's a serial killer on the loose... Getting laid up with a broken ankle and placed on leave could not have happened at a worse time for Detective Sydney Shepherd. Enter private investigator Trent Gannon, who believes her current investigation dovetails with his cold case. Despite a complex past, Sydney and Trent agree to shelve their undeniable attraction and team up when there's another victim. As all indications point to Sydney's next-door neighbour as the prime suspect, will Sydney and Trent be the next casualties?