As Detective Kat Donovan focuses on the profile on the online dating site, she feels her whole world explode. Staring back at her is her ex-fiancé Jeff, the man who shattered her heart. But when she reaches out to the man in the profile, her reawakened hope quickly turns to terror. With lives on the line, including her own, Kat must venture deeper into the darkness than she ever has before, and discover if she has the strength to survive there.