Yes, he lost two cases. One was "The Case of the Deadly Verdict." 10/17/1963. But it wasn't his fault. His client withheld evidence needed to win.
He also lost "The Case of the Terrified Typist" (6/21/1958). After his client has been found guilty and sentenced to death, Mason discovers and reveals that his client isn't the person whose name (Jefferson) he was using throughout the trial, and successfully asks for a retrial since much of the evidence applied to the real Jefferson, not his client (real name Kincaid). Still, it would be wrong to say he "won in the end," since he admits that Kincaid is indeed guilty, and makes it clear that Burger should have no problem getting another guilty verdict against Kincaid (using the correct evidence and name).
Chat with our AI personalities
Perry Mason: The Case of the Deadly Verdict ( MOST WELL KNOWN)
This justifiably famous episode, ranked as #51 in the "100 Greatest TV Episodes of All Time" by TV Guide, was originally scheduled to air on October 3, 1963. (Curiously, it was removed from the series' syndicated package in 1966, and not seen again until it was cablecast in 1988).
"The truth is, Perry Mason didn't win every case. In fact, at least three decisions went against him," the fan website www.perrymasontvshowbook.com says.
It lists losses in the "The Case of the Witless Witness," "The Case of the Terrified Typist" and "The Case of the Deadly Verdict" but notes that Perry Mason triumphs before the final credits. Other websites list only the last two as losses.
The real killer was Norman Thurston.
You can watch full episodes of Perry Mason in http://www.BbPcTv.com/program-Perry-Mason.aspx in high definition online. You can also find all your favorites TV shows online on demand anytime directly from the producers... and it is free!
Paul Drake was Perry Mason's private detective.
Lieutenant Arthur Tragg
It was the 1987 made-for-TV movie, Perry Mason: The Case of the Sinister Spirit.