Trivia: Actor William Gargan began his career in 1924, shortly after leaving high school, and made it to Broadway within a year. In 1932 he won great acclaim for his work in the play The Animal Kingdom, leading to an invitation from Hollywood where he made his film debut in 1932. During the '30s he played high-energy, gregarious leads in many "B"-movies and second leads in major films; later he moved into character roles. For his work in They Knew What They Wanted (1940), he received a "Best Supporting Actor" Oscar nomination. He made few films after 1948, but from 1949 to 1951 he starred in the title role of the TV series Martin Kane, Private Eye then reprised the role in 1957 in The New Adventures of Martin Kane. He was stricken by cancer of the larynx, and in 1960 his voice box was removed in surgery, ending his career. He learned esophageal speech then taught this method for the American Cancer Society; the same group enlisted him as an anti-smoking campaigner. Two years after losing his speech, he gave his final performance, portraying a mute clown on TV in King of Diamonds. He authored an autobiography, Why Me? (1969), recounting his struggle with cancer. His brother was actor Edward Gargan.

Trivia: The son of a San Francisco shoe factory owner, American actor Lloyd Nolan made it clear early on that he had no intention of entering the family business. Nolan developed an interest in acting while in college, at the expense of his education -- it took him five years to get through Santa Clara College, and he flunked out of Stanford, all because of time spent in amateur theatricals. Attempting a "joe job" on a freighter, Nolan gave it up when the freighter burned to the waterline. In 1927, he began studying at the Pasadena Playhouse, living on the inheritance left him by his father. Stock company work followed, and in 1933 Nolan scored a Broadway hit as vengeful small-town dentist Biff Grimes in One Sunday Afternoon (a role played in three film versions by Gary Cooper, James Cagney, and Dennis Morgan, respectively -- but never by Nolan). Nolan's first film was Stolen Harmony (1935); his breezy urban manner and Gaelic charm saved the actor from being confined to the bad guy parts he played so well, and by 1940 Nolan was, if not a star, certainly one of Hollywood's most versatile second-echelon leading men. As film historian William K. Everson has pointed out, the secret to Nolan's success was his integrity -- the audience respected his characters, even when he was the most cold-blooded of villains. The closest Nolan got to film stardom was a series of B detective films made at 20th Century-Fox from 1940 to 1942, in which he played private eye Michael Shayne -- a "hard-boiled dick" character long before Humphrey Bogart popularized this type as Sam Spade. Nolan was willing to tackle any sort of acting, from movies to stage to radio, and ultimately television, where he starred as detective Martin Kane in 1951; later TV stints would include a season as an IRS investigator in the syndicated Special Agent 7 (1958), and three years as grumpy-growley Dr. Chegley on the Diahann Carroll sitcom Julia (1969-1971). In 1953, Nolan originated the role of the paranoid Captain Queeg in the Broadway play The Caine Mutiny Court Martial, wherein he'd emerge from a pleasant backstage nap to play some of the most gut-wrenching "character deterioration" scenes ever written. Never your typical Hollywood celebrity, Nolan publicly acknowledged that he and his wife had an autistic son, proudly proclaiming each bit of intellectual or social progress the boy would make -- this at a time when many image-conscious movie star-parents barely admitted even having children, normal or otherwise. Well liked by his peers, Nolan was famous (in an affectionate manner) for having a photographic memory for lines but an appallingly bad attention span in real life; at times he was unable to give directions to his own home, and when he did so the directions might be three different things to three different people. A thorough professional to the last, Nolan continued acting in sizeable roles into the 1980s; he was terrific as Maureen O'Sullivan's irascible stage-star husband in Woody Allen's Hannah and Her Sisters (1986). Lloyd Nolan's last performance was as an aging soap opera star on an episode of the TV series Murder She Wrote; star Angela Lansbury, fiercely protective of an old friend and grand trouper, saw to it that Nolan's twilight-years reliance upon cue cards was cleverly written into the plot line of the episode.

Trivia: He debuted onstage in stock in 1921, and reached Broadway three years later. He entered films in 1929, going on to a busy screen career through the '30s; his screen work after 1940 was infrequent. He often played fast-talking, scoop-chasing reporters and other dynamic types. After 17 years with no film appearances, he came back to the screen in Gore Vidal's The Best Man (1964), reprising his stage role as a Harry Truman-like politico; for his work he received a Best Supporting Actor Oscar nomination. He did much work on TV, including the lead role in the series Martin Kaye, Private Eye.

Trivia: After studying to become a painter, Mark Stevens became active in Canadian theatrical work. He then launched a radio career as an announcer at a small station in Akron, Ohio. In 1944, Stevens was brought to Hollywood by Warner Bros., where he was billed as Stephen Richards. He graduated to top billing in RKO's From This Day Forward (1945), playing a returning war hero making an uneasy adjustment to civilian life. Critics panned the film but praised Stevens, who was then snatched up by 20th Century-Fox for a series of plum starring roles, including songwriter Joe E. Howard in the 1947 musical biopic I Wonder Who's Kissing Her Now? and the husband of mental patient Olivia De Havilland in The Snake Pit (1949). When it seemed as though his film career had ground to a halt, Stevens moved to television, where in 1953 he became the fourth actor to essay the role of detective Martin Kane. The following year, he succeeded Pat McVey in the part of crusading journalist Steve Wilson on the weekly TVer Big Town. During both of his TV-series stints, Stevens publicly derided the quality of the material he'd been handed, demanding full script control and the opportunity to direct. Upon returning to the Big Screen, Stevens produced and directed a brace of serviceable programmers: Cry Vengeance (1954) and Timetable (1956). After closing out his Hollywood career in 1964, Mark Stevens repaired to Europe, where he directed his last film to date, the German-Spanish co-production Sunscorched (1966).

Trivia: Horace McMahon dabbled in professional and semi-professional acting while attending Fordham University Law School, continuing to do so while holding down a day job as a newspaper reporter. He made acting his full-time vocation after his first Broadway appearance in 1931. In films from 1937, the growly, jowly MacMahon was initially typed in gangster roles. After scoring a personal success as Lieutenant Monaghan in the 1949 Broadway play Detective Story, MacMahon repeated the role in the 1951 film version -- and thereafter was pigeonholed in "cop" roles. Before beginning his five-year (1958-63) tenure as Lieutenant Mike Parker on the TV series The Naked City, MacMahon had been a semi-regular on Martin Kane (1950, as the newsstand owner who stocked nothing but the sponsor's cigarette) and Make Room for Daddy (1953, as Danny Thomas' agent). His last weekly TV assignment was as Hank McClure, police contact for public relations man Craig Stevens, in the short-lived Mr. Broadway. Having been born near Norwalk, Connecticut, Horace McMahon spent his retirement years in that community with his wife, former actress Louise Campbell.

Trivia: Missouri native Frank M. Thomas cut his professional acting teeth with the Van Dyke Stock Company in St. Louis. Thomas made his Broadway bow in 1913, appearing in at least one production per year for the next 22 years. In 1936, he entered films with an RKO Radio contract, playing an assortment of character roles ranging from trench-coated detectives to shady crooks. During the years 1938-1942, Thomas showed up in more films than any other actor. Long retired, he died in 1989 at the age of 100. Married to actress Mona Bruns, Frank M. Thomas was the father of actor/writer Frankie Thomas, of Tom Corbett, Space Cadet fame.