In Paris, a down and out medical student Johann Radek is paid by Bill Kirby to murder his wealthy aunt. A knife grinder is suspected, but Radek keeps taunting the police until they realize that he is the killer. The police and Maigret are led on chases through the streets and over the rooftops of Paris and finally up the girders of the Eiffel Tower." Directed by Burgess Meredith, written by Harry Brown, based on Georges Simenon's novel, 1950.