Ellery Queen - Season 1 - Eps 7: The Adventure of Colonel Niven's Memoirs
A WW II spy, Colonel Alec Nivin, is on a book tour in New York concerning his memoirs in which he accuses a variety of people of war crimes and treasonous acts. Ellery's galpal, Jenny O'Brien, finds the erstwhile spy dead in his hotel room having been stabbed with an antique dagger. Everybody except Jenny is a suspect in this one.
About Ellery Queen

Title: Ellery Queen
First Air Date: 1975-09-11
Last Air Date: 1976-04-04
Status: Ended
Rating: 7.4/10 (from 39 votes)
Language: EN
Seasons: 2
Total Episodes: 22
Network: NBC
Genres: Mystery, Drama
Production Companies: Universal Television, Fairmont/Foxcroft Productions, Tom Ward Enterprises
Synopsis
Ellery Queen is an American television detective mystery series based on the fictional character Ellery Queen. It aired on NBC during the 1975-76 television season and stars Jim Hutton as Ellery Queen, David Wayne as his father, Inspector Richard Queen, and Tom Reese as Sgt. Velie. Created by the writing/producing team of Richard Levinson and William Link, the title character "breaks" the fourth wall to ask the audience to consider their solution.
Cast

Jim Hutton
Ellery Queen

David Wayne
Inspector Richard Queen

Tom Reese
Sgt. Thomas Velie