Ted (Zac Efron): handsome, smart, charismatic, affectionate. Liz (Lily Collins): a single mother, cautious, but smitten. A picture of domestic bliss, the two seem to have it all figured out, that is until Ted is arrested and charged with a series of increasingly grisly murders. As concern turns to paranoia, Liz is forced to consider how well she knows the man she shares a life with and, as the evidence piles up, decide if Ted is truly a victim, or actually guilty as charged.