A baffling robbery at the Comus Towers art museum becomes a personal matter for Chief Ironside (Raymond Burr) when his close friend, the museum owner, is murdered. Inasmuch as the crime took place in a high-rise building, it would seem that a "human fly" was the culprit. At least, that's what the police believe--but Ironside is becoming more and more certain that the robbery was an inside job, and that the criminal is still on the premises. ~ Hal Erickson, Rovi