[2] Stewart's played Louis "Lepke" Buchalter, the real-life crime boss whose activities were central to the film Murder, Inc. (1960).

The Hitchcock episode "The Sorcerer's Apprentice" concerns a magician (played by Stewart) whose act includes sawing his wife in half.

An infamous footnote in the series' history, the episode fell into public domain, and is often included in value-priced Hitchcock DVD collections.

Though the play was a notorious flop, Stewart won the Clarence Derwent Award for most-promising male performer from the Actors' Equity Foundation.

He also appeared in the 1962 Broadway premiere of A Man For All Seasons and the original 1964 productions of Arthur Miller's After the Fall and Incident at Vichy.