The D.A.'s Man

The D.A.'s Man is an American television crime drama, produced by Jack Webb, that aired on NBC from January 3, 1959, to August 29, 1959.

Premise
The central character, who went by the single name Shannon, was a private detective who worked for the Manhattan district attorney. Topics that Shannon investigated included hijacking rings, narcotics, prostitution, and other illegal activities that provided money to the underworld. His investigations led him to use "a variety of guises to ferret out criminals".

Shannon was not allowed to carry a gun or identification of any kind, and police were not aware of his position.

Cast

 * John Compton as Shannon
 * Ralph Manza as Al Bonacorsi
 * Herb Ellis as Frank LaValle

Production
The program was based on the book The D.A.'s Man by Harold Danforth and James B. Horan, which was "a nonfiction novel based on Danforth's real-life experiences as a special investigator for the NYC Special Rackets Prosecutor and the Manhattan DA's office." It was produced by Mark VII Limited. It replaced The Ed Wynn Show at 10:30 to 11 p.m. Eastern Time on Saturdays.

Webb was the executive producer, and Frank LaTourette was the producer. Danforth was the technical advisor. Webb and Ben Alexander were among the directors. Writers included Charles Beaumont and Richard Matheson.

Liggett & Myers, for Chesterfield King and L&M cigarettes, sponsored the program. George Stevens Jr. and Webb were among the directors.