The sons of serial killer Nick Parrish are now master criminals in their own right. They have formulated a plan to spring their father from prison and murder the person who put him there, investigative journalist Irene Kelly.

Reporter Irene Kelly matches wits with a killer who is giving her advance notice of his kills with riddles from Greek mythology. He signs himself Thanatos, as the Greeks called death, addresses her as Cassandra, the woman who told the truth but whom no one believed, and warns that Clio will be the first to die, a reference to the muse of history. The very same night a woman professor is murdered. By the author of Sweet Dreams, Irene.

When a fellow reporter is blown up while investigating an unsolved murder from 1955, Irene Kelly is determined to solve the mystery despite attempts on her own life.

A serial killer leads authorities in Nevada to the graves of his women victims which he has secretly booby trapped. A grave explodes, killing several people and he escapes in the confusion, but reporter Irene Kelly survives and goes after him.