Who Knew

While hurrying home from an exhausting day at work, Jo Montana stops at an intersection.

Trying to avoid hitting a bicyclist, accidently backs into a police motorcycle stopped behind her.

She is asked for identification. The next evening, the policeman shows up at her door with a report of a peeping Tom terrorizing the neighborhood. Jos young sister becomes involved with a group headed by a man who goes by the name the Grand Zoroaster who Jo is sure is dealing drugs. When the receptionist of the company Jo works for turns up murdered and tossed in a Dumpster, she sets about to find the killer and nearly loses her own life in the process.