Ellery Queen - Season 1 - Eps 8: The Adventure of the Mad Tea Party
Ellery and his agent, Howard Biggers, travel to the estate of the wealthy and eccentric Spencer Lockridge. It seems as though Biggers wants to turn one of Ellery's books into a play and is trying to get Lockridge to provide the financial backing. All goes for naught when Lockridge disappears while wearing a Mad Hatter's costume from the Alice in Wonderland theme party he was throwing. Whodunit? Could it have been someone from New York or maybe even Dallas?
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