A horrific double murder at a luxury seaside estate leads San Diego homicide detectives Kate Delgado and Jack Langton on a cat-and-mouse chase to find the killer. Multiple suspects emerge, but solid alibis, dual identities, and inconsistent DNA evidence challenge the detectives throughout their investigation. As dark secrets from the detectives' pasts come to light and they close in on the killer, might their own lives now be in jeopardy?