Two detectives' steamy past complicates their hunt for a psychotic killer and puts them in an assassin’s deadly sights. Would you trust a former lover who’d betrayed you? Detectives Cole Trane and Mollie Simmons have no other choice. They’re after a ruthless killer tied to the Russian mafia who leaves behind a bloody trail of victims - from a world-famous movie star to a squad of Royal Canadian Mounties - as he races for the border. Their only hope is to have each other’s back like they once had each other’s heart.