Making his
Broadway debut in 1915, Kruger quickly became a
matinee idol. Though he played the hero on occasion, for most of his career, he played the main villain or a charming or corrupt businessman. One of his best known roles was in the
Douglas Sirk film
Magnificent Obsession (1954). Kruger played the supporting role of Judge Percy Mettrick, who unsuccessfully urges
Will Kane to leave town in
High Noon (1952). Kruger is also remembered for playing the villain Tobin in
Alfred Hitchcock's spy film
Saboteur (1942) and mob boss Stevens in the film noir
711 Ocean Drive (1950). as Franklyn Malleson Ghentin in the 1961 episode "A Fool for a Client" of
James Whitmore ABC's
legal drama,
The Law and Mr. Jones, and as Karl in the episode "Quite a Woman" of the short-lived 1961 CBS series
The Investigators starring
James Franciscus. Kruger made four guest appearances on
CBS's
Perry Mason. In his first two appearances, "The Case of the Grumbling Grandfather" (1961) and "The Case of the Counterfeit Crank" (1962), he was cast as Mason's client, and in both episodes was the title character. In his final appearance, he played Judge Norris in "The Case of the Missing Button" (1964). In 1955, he appeared in the live telecast of
The Desert Song as General Birabeau. ==Personal life==