1969년 8월, 샌프란시스코의 신문사들에 조디악이라 자칭하는 연쇄살인범의 편지가 배달된다. 자신이 저지른 살인을 상술한 그 편지는 동봉한 암호문을 신문에 싣지 않으면 추가살인을 저지르겠다는 경고로 끝난다. 편지와 암호문이 공개되자 샌프란시스코 일대는 충격에 휩싸인다. 형사인 데이빗(마크 러팔로)과 빌(앤서니 에드워즈), 신문사 샌프란시스코 크로니클의 사건 기자 폴(로버트 다우니 주니어)은 전력을 기울여 각각 사건 해결과 추리에 나선다. 그러나 가장 끈질지게 사건의 실마리를 찾아 헤매는 사람은 경찰도 기자도 아닌, 시사만평가 로버트(제이크 질렌홀)이다.
Two honest cops decide to cross the line for a one time score. But a simple plan to shake up an illegal arms dealer goes bad, resulting in his death. When their victim turns out to be an undercover FBI agent, a bad situation only turns worse. In a bizarre twist of fate, they are assigned to solve the murder. Now they must uncover and destroy the very evidence that could put them behind bars for life.
Shannon Whirry stars as Carrie and Terrie, a pair of twins who were separated in youth when their father murdered their mother and was in turn killed by his own bad twin daughter. Now the sweet-natured "good" sister has grown up to marry an abusive louse. Trapped in a sexless relationship, she seeks solace with a therapist (Kristine Kelly), but her problems are about to be compounded when her wicked sister arrives in town, intent on avenging herself on her double for past wrongs. Even the help of a private detective on her side may not be enough when her sister becomes allied with her own husband.
