THE TRIALS OF O'BRIEN--the television series (and film)--episodes online at the moment:

 

The Trials of O'Brien was, as noted elsewhere in the blog, a 22-episode/single-season CBS television series that had the poor fortune of being slotted in 1965-66 against another new series, NBC's Get Smart, and a remarkably popular older series on ABC, The Lawrence Welk Show. CBS didn't seem inclined toward giving it another chance in a less viewer-deprived slot. Which is a pity, since it was a decent series, even if the humor in the production could be a bit broad at times, rather more deft in other instances. More or less, the regular cast included Peter Falk as gambling-addicted, reluctantly divorcing, somewhat eccentric defense attorney Daniel O'Brien (Falk apparently preferred this role to that of the not dissimilar Columbo);  his much put-upon but deft and devoted secretary Miss G (Elaine Stritch); his soon to be ex-wife and commercial artist Katie (Joanna Barnes); her mother, Margaret (Ilka Chase), his bookie, the Great McGonigle (David Burns), and a police officer of his acquaintance, Garrison (Dolph Sweet).

 

Circulating episodes of the series are mostly in not the best shape, after multi-generation dubbing from tape to tape...who knows if any legatee of Filmways or MGM have retained masters. Posted version of the one 2-part episode, filmed in color and released in foreign markets (and probably to US tv syndication) as a feature, looks rather better. (Click on the YouTube logo to watch them in full-screen.)

 

"Over Defence is Done": Pilot episode--guest stars include Murray Hamilton, Vincent Gardenia and Kathleen Cody. A rather hardboiled episode at times.

 

"Bargain Day on the Street of Regret": Ep. 1o2--guest stars include Herschel Bernardi, Rober Blake, Albert Dekker and Judi West.

 

"No Justice for the Judge": Ep. 103--guest stars include Burgess Meredith and Barnard Hughes.

An episode which won scripter David Ellis the Writers Guild of America award for best episodic drama script in 1966.

Not available on YouTube. Archived at the University of Georgia (the Walter J. Brown Media Archives) in two parts: 

Part 1 

Part 2

 

"A Gaggle of Girls": Ep. 107--guest stars include Tammy Grimes, Noëlle Adam, David Doyle, Valerie Allen and Reni Santoni.

"Charlie's Got All the Luck": Ep. 110--guest stars include Martin Sheen, Tony Roberts and Judi West.

"Picture Me a Murder": Ep. 111--guest stars include Alan Alda, Joanna Pettet, Charles Grodin, Jessica Walter, Harold J. Stone and Claude Akins.

And, finally among what's currently posted, the film version of  Ep. 120 and 121, "The Greatest Game" Pts. 1 & 2, slightly recut as Too Many Thieves, with guest stars Britt Eklund, David Carradine, George Coulouris and Nehemiah Persoff.

Posters for the film version: