The Lone Wolf Keeps a Date

After adding a rare Cuban stamp to his coveted collection and admonishing his butler Jamison for winning money in a rigged dice game in Havana, retired jewel thief and unofficial private detective Michael Lanyard (a/k/a "The Lone Wolf"), flies off to Miami, meeting gorgeous Patricia Lawrence on board the flying boat. Initially reserved, Lawrence decides to confide in Lanyard about her troubles — one of her mail-sender boyfriend Scotty's clients was killed some time ago, after retaining Scotty to send a package stuffed with $100,000 in bank notes. Descending at the Miami airport, they are ambushed by kidnappers Chimp, Mr. Lee, employees of Big Joe Brady. The Lone Wolf swiftly outruns the criminals with Lawrence. He hides the retrieved stack of money in a hotel safe, but he's is discovered by Inspector Crane and his annoyingly buffoonish assistant Detective Sergeant Wesley Dickens, along with goofy Miami police Captain Moon. Lanyard evades capture and sets out to expose the three villains on his own. The detective also realizes that his prized stamp collection has also been swiped by Big Joe Brady. He manages to track them down and has the police arrest them. After myriad chases, double-crosses and switches, The Lone Wolf exonerates himself and mulls over missing an important philatelist's convention with his finally retrieved prize collection.

The "Lone Wolf" title character was played by Warren William — his fourth time doing so. Eric Blore continued playing Lanyard's butler "Jamison."[1] Although Walter Baldwin is listed in studio documents as playing a "Night watchman" in the film,[1] he actually did not appear in it.[2]

Sidney Salkow served as director of the film for the production company and distributor Columbia Pictures, while Salkow and Earl Felton co-wrote the screenplay, based on the jewel-thief-turned-private-detective character created by Louis Joseph Vance (1879–1933) in a series of eight novels published between 1914 and 1934. Barney McGill signed on as cinematographer. Morris Stoloff headed the musical direction, and Richard Fantl edited the film. Principal photography by Barney McGill officially began on August 21, 1940, and ended in mid-September 1940.[1]

Through the release print lists the copyright date of "MCMXL" (1940), the film was officially released in North American cinemas in January 1941. It is alternatively referred to as Revenge of the Lone Wolf and Alias the Lone Wolf.[1] In his 2010 book Mystery Movie Series of 1940s Hollywood, Ron Backer generously wrote that the film "is the best of the Warren William Lone Wolf movies" although "it seems to lack that certain something that made the earlier Lone Wolf movies so entertaining." He concluded that it made "a good entry in the Lone Wolf series, with less sexual violence this time round."[3] In marked contrast, Leonard Maltin wrote for his Movie & Video Guide (1998) that the film was "listless."[4]

• Gene Blottner (2012). Columbia Pictures Movie Series, 1926—1955: The Harry Cohn Years. McFarland. ISBN 978-0-7864-3353-7.
• Ron Backer (2010). Mystery Movie Series of 1940s Hollywood. McFarland. ISBN 978-0-7864-5700-7.
• Leonard Maltin (October 1998). Leonard Maltin's Movie & Video Guide. Plume. ISBN 978-0-452-27992-6.

• The Lone Wolf Keeps a Date at the TCM Movie Database
• The Lone Wolf Keeps a Date at AllMovie
• The Lone Wolf Keeps a Date at the TCM Movie Database
• The Lone Wolf Keeps a Date at the American Film Institute Catalog