Maigret and His Greatest Case or Enter Inspector Maigret is a 1966 crime film directed by Alfred Weidenmann and starring Heinz Rühmann, Françoise Prévost and Günther Stoll. It was made as a co-production between Austria, France, Italy and West Germany. It is based on the 1931 novel Maigret at the Gai-Moulin featuring the fictional Sûreté detective Jules Maigret.