Donnelly Rhodes (as James Bellington) Lonny Chapman (as Lt. Wymar) Lou Jacobi (as Dr. Glover) Neile Adams (as Sgt. Louise Marklen) Jess Kirkpatrick (as Thomas Grindley) Sandra Gould (as Secretary) Betty Harford (as Woman in Museum) Harold Ayer (as Salesman) Police become suspicious of an unsuccessful artist named James Bellington after a city commissioner of parks and recreation recieves a series of bomb threats. Bellington tries to met the official. Since he is carrying a box that might be a bomb, the police stop him. They discover that the box only contains art supplies. Later, at an art museum Bellington is again stopped for carry a suspicious package whcih turns out to be harmless. The police force Bellington to see a psychiatrist and Bellington tells the psychiatrist that his next bomb threat will be real. The police stop a bomb carrying Bellington at the museum. He gives everyone in the museum ten minutes to get out and they do.