The Thin Man Actor: Nat Pendleton, Myrna Loy, Maureen O'Sullivan, William Powell Director: W.S. Van Dyke Genre: Mystery, Crime, Comedy Nation USA Year 1934 Share: Synopsis After many witty double-entendres and a climatic dinner scene with all the suspects, it is revealed that the lawyer MacCaulay killed Wynant, the girlfriend, and Nunheim. Video & Photo 1 photos