The Trials of O'Brien is a 1965 television series starring Peter Falk as sordid, Shakespeare-quoting lawyer Daniel J.

"Danny" O'Brien, and featuring Elaine Stritch as his secretary "Miss G", and Joanna Barnes as his ex-wife Katie.

The series ran for 22 episodes on CBS Television between September 18, 1965 and March 18, 1966.

Among its guest stars: Milton Berle, Robert Blake, David Carradine, Faye Dunaway, Britt Ekland, Tammy Grimes, Buddy Hackett, Gene Hackman, Frank Langella, Angela Lansbury, Cloris Leachman, Roger Moore, Rita Moreno, Pierre Olaf, Estelle Parsons, Joanna Pettet, Brock Peters, Tony Roberts, and Martin Sheen.

O'Brien's negotiations for the Viktor Emblem get more complicated when the person holding it has his life threatened.