The Lone Wolf

When Marcel, a waif, saves master crook Burke from the police, Burke adopts the youngster and teaches him his profession. Years later, Marcel has become a master crook himself, working under the name of Michael Lanyard. His clever work baffles the Paris police, who dub him "The Lone Wolf". The Pack, a gang of criminals, notifies The Wolf that unless he joins them, he is marked for destruction. Lucy, an undercover agent masquerading as a crook to expose the gang, helps The Wolf escape. This inaugurates a series of adventures in which Lucy and The Wolf are pursued by the gang, finally making their escape to England by plane. The Pack follows, only to meet their death in a plane crash. Liberated from his tormentors, The Wolf vows to go straight and marries Lucy.

International crook Michael Lanyard, alias "The Lone Wolf," offers to recover stolen plans for a defense apparatus in exchange for asylum in the United States. He meets Lucy Shannon, a member of the gang, called "The Pack," suspected of having the stolen plans. Lucy assists Lanyard in obtaining the plans and later helps him escape from the other members of the gang. Together, in a daring airplane ride, they deliver the plans. Lanyard learns that Lucy is a Secret Service agent.

A thief operating solo romances a lady at a masked ball and later helps the police by bringing a gang of fellow crooks to justice.

When Eve De Montalais (Lois Wilson) plans to smuggle her jewels into the United States, unknown to her traveling on the same ship are a gang of thieves who plan to steal the jewels. Michael Lanyard (Bert Lytell), alias The Lone Wolf, upsets their scheming and Eve seeks his aid in getting the gems past customs officials. While at a New York nightclub, Eve is informed that Lanyard is The Lone Wolf. She is then duped by a crook who assumes the role of a customs officer and induces her to turn over the jewels, Eve then escapes upon discovering the deception. Lanyard is overpowered by the gang but manages to free himself and declares the jewels to customs officials, who then promptly arrest the thieves. Eve is relieved to find that Lanyard is a Secret Service agent, and the lovers are reunited.

During World War I, a professional thief known as The Lone Wolf is assigned to steal a cylinder with important information from behind the German lines and bring it to Allied intelligence headquarters. However, German agents set out to stop him, headed by the man who was responsible for the death of the thief's sister.

Story of a gentlemanly crook who steals a ring to save a queen's honor.

Once a jewel thief always a jewel thief? Yes and no. Yes if you consider the fact that Michael Lanyard also known as the Lone Wolf once retired from the "trade" but relapses back into his old habits when he is tempted by the emerald pendant of beautiful socialite Marcia Stewart. The trouble (?) is that he falls for the belle and he soon gets more interested in getting the girl than the jewels that adorn her. What he wants now is to return the pendant but a rival gang interfere and force him to take part in a big-time caper. Bad for them, Michael exposes them and hands them over to justice. Michael and Marcia will live happily ever after. Well, all things considered, once a thief...not always a thief!

A princess in distress calls upon reformed jewel thief Michael Lanyard to aid her against villainous opposition.

A group of spies is after the plans for an anti-aircraft gun, and the leader uses the opportunity to embroil the Lone Wolf in the plot. Trying to settle an old score, this shady character implicates his old nemesis by forcing him to crack the safe where the plans are stored.

Delia Jordan's father is murdered and some very valuable jewelry stolen. She hires Michael Lanyard (aka The Lone Wolf), a retired and reformed jewel thief to find the killer and the jewels. He is more than glad to do so, as it is just a matter of time before the police begin to suspect he was the guilty party.

A hardworking secretary for a rich woman finds herself engaged to the woman's son and accused of a murder she didn't commit. Lanyard, the Lone Wolf, and Jamison set out to find the real killer.

Michael Lanyard is hired to safeguard gems intended to finance a foreign nation's battle for liberty.

Complicated plot involving missing stamp collection and kidnapped businessman, with the Lone Wolf keeping one step ahead of the police in Miami trying to solve the crime and make a profit.

The Lone Wolf Michael Lanyard takes Inspector Crane's challenge that he can't keep out of trouble for 24 hours. No sooner accepted when Lanyard is sucked into a case of murder and kidnapping in which he is sole suspect. Lanyard pursues the perpetrators, a gang of cunning thieves with engraving plates belonging to the U.S. Treasury, even as he is being hunted by police.

The Lone Wolf tracks down German spies in London during the German bombing.

Michael Lanyard (Warren William), alias the Lone Wolf and his man Friday, Jamison (Eric Blore), pick up Eve Andrews ('Marguerite Chapman')), when her car is wrecked. At her place, they discover the body of wealthy playboy Harry Cooper (Gerald Mohr) and are arrested. Inspector Crane (Thurston Hall), who doesn't believe the Lone Wolf has reformed, discovers jewels are missing. Lanyard and Jamison escape. Lanyard learns Cooper was blackmailing Eve, Sonia Budenney (Tala Birell), wife of a famous physician, and Jane Merrick (Mona Barrie), famous actress. He is spotted by gossip columnist Sidney Shaw (Warren Ashe), who agrees not to turn him in if he can tag along. Lanyard learns that Cooper planned to meet a woman at the airport. Hurrying there, he spots the girl and has Jamison trail her. Later, as he is questioning the girl, Patricia (Margaret Hayes), she is shot and wounded. After being turned in twice by Shaw and escaping , despite his promise not to do so, Lanyard and Jamison return again to Patricia's apartment where he learns that she is Shaw's wife.