Rookie private detective, Jack Hammer (no relation to Mike) is hired by an attractive, Eastern European refugee to track down her missing uncle. Slow to engage, Jack assumes the uncle is simply off on a bender at the local pool hall ... until he discovers that somebody has broken into her house, beaten her to a pulp, and left her body floating fully clothed in her own bathtub. An unsigned note demands the delivery of a mysterious device that bears the name of the missing uncle, and althoug...