Women are being attacked in their beds at night. At each crime scene police find no trace of forced entry and are baffled as to how this intruder is gaining access to apartments sometimes more than 15 stories up. Unraveling the killer's modus operandi and eyewitness accounts lead detectives to Russell Johnson - a handsome and well-built man who actually scales apartment balconies to find his victims. Pressured into a hasty and premature arrest, detectives must gain the evidence they need from the killers unstable mind, otherwise this balcony climber could walk free to hunt again.