A police lieutenant uncovers more than he bargained for as his investigation of a series of murders, which have all the hallmarks of the deceased Gemini serial killer, leads him to question the patients of a psychiatric ward.

When electrocuted by the fuse box at home, Graham gets ideas concerning his nagging wife and the guy, who got Graham's promotion at the office.

A detective investigating a series of murders becomes involved with a woman who may be the culprit.