) in
Lady for a Day (1933) William, who appeared in his first Broadway play in 1920, soon made a name for himself in New York, appearing in more than 20 plays on Broadway between 1920 and 1931. During this period he also appeared in two silent films,
The Town That Forgot God (1922) He began as a contract player at
Warner Bros. and quickly became a star during what is now known as the 'Pre-Code' period. He developed a reputation for portraying ruthless, amoral businessmen (
Under 18,
Skyscraper Souls,
The Match King, ''
Employees' Entrance), crafty lawyers (The Mouthpiece, Perry Mason), and outright charlatans (The Mind Reader''). These roles were considered controversial, yet they were highly satisfying. This was the harshest period of the
Great Depression, characterized by massive business failures and oppressive unemployment. Movie audiences jeered at the businessmen, who were often portrayed as predators. William did play some sympathetic roles, including Dave the Dude in
Frank Capra's
Lady for a Day and a loving father and husband cuckolded by
Ann Dvorak's character in
Three on a Match (1932). He was a young songwriter's comically pompous older brother in
Gold Diggers of 1933. William was
Julius Caesar in
Cecil B. DeMille's
Cleopatra (1934; starring
Claudette Colbert in the title role), and with Colbert again the same year as her character's love interest in
Imitation of Life (1934). He played the swashbuckling
musketeer d'Artagnan in
The Man in the Iron Mask (1939), directed by
James Whale. in
The Case of the Lucky Legs (1935), with
Genevieve Tobin and
Patricia Ellis The studios capitalized on William's popularity by placing him in multiple "series" films, particularly as detectives and crime solvers. William was the first to portray
Erle Stanley Gardner's fictional defense attorney
Perry Mason on the big screen, starring in four Perry Mason mysteries. He played
Raffles-like reformed jewel thief
The Lone Wolf in nine films, beginning with
The Lone Wolf Spy Hunt (1939), and appeared as Detective
Philo Vance in two of the series films,
The Dragon Murder Case (1934) and the comedic
The Gracie Allen Murder Case (1939). He also starred as Sam Spade (renamed Ted Shane) in
Satan Met a Lady (1936), the second screen version of
The Maltese Falcon
. Other roles included
Mae West's manager in
Go West, Young Man (1936); a jealous
district attorney in another James Whale film,
Wives Under Suspicion (1938); copper magnate
Jesse Lewisohn in 1940's
Lillian Russell; the evil Jefferson Carteret in
Arizona (also 1940); and the sympathetic Dr. Lloyd in
The Wolf Man (1941). In 1945, he played Brett Curtis in cult director
Edgar G. Ulmer's 1945 modern-day version of
Hamlet, called
Strange Illusion. In what would be his last film, he played Laroche-Mathieu in
The Private Affairs of Bel Ami in 1947. On radio, William starred in the
transcribed series
Strange Wills, which featured "stories behind strange wills that run the gamut of human emotion." ==Personal life==