Harold Foley and his wife Joyce, both biologists at a local university, come home to find their son and their housekeeper murdered. The case leads to a man obsessed with a certain sorority.

A police officer who has been having financial problems takes hostages at gunpoint and is then killed by fellow officers. He has the keys to an apartment that is not his primary residence; detectives Lupo and Bernard search the apartment and find a dead body and valuable stolen documents that have been stolen by a man who needs them to prove that he is the illegitimate son of John F. Kennedy.