O'Brien represents a client who was charged with murder after being released from prison. Guest star: Vincent Gardenia

O'Brien wins the contract of boxer Joe Rooney (Robert Blake) in a dice game, but the pugnacious Rooney is in jail for stealing money from his former manager. Guest Stars include Hershel Bernardi (star of series ""Arnie"", a Broadway ""Fiddler"", and much more), Tony Musante (""Toma"") and Albert Dekker (""Dr.Cyclops"", ""Experiment Perilous"", probably one of his last roles before his strange auto-erotic death) and the lovely, talented Judi West (""Fortune Cookie""), in her television debut, as Joe's girlfriend.

Eva Grimaldi (Mary Tahmin) cons the con: she borrows $2500 from her boyfriend Ollie Maxwell (Buddy Hackett) to ransom her millionaire father, who is being held prisoner in Latin America.

O'Brien's English bookie is charged in the death of an accountant, but the person who can clear him is nowhere to be found.

After discovering that a man is dating his ex-wife (Joanna Barnes), O'Brien delightedly sets him up as a "pigeon" in order to trap a killer. Guest stars: Roger Moore and Michael Constantine.

O'Brien is retained by a Mother Superior in order to persuade the owner of an adjoining cafe to permit St. Anthony's Youth Center to use its garden.

While being bugged by his ex-wife to sign the lease on her luxurious apartment, O'Brien must defend a client involved in a fatal shooting that follows a fixed horse race. Guest stars: Martin Sheen, Tony Roberts, and Philip Bosco.

""WANTED - Macedonian Art Objects, 17th Century, Contact:Daniel J O'Brien"" With this ad in a Manhatten peoper, O'Brien begins an international hunt for the Viktor Emblem, a ""jewel encrusted treasure of a Balkan Country"", which has been stolen from a shrine, and is being offered by 4 thieves for $500,000, with a fee for O'Brien to handle the negotiations. Altho this two part episode was broadcast in B&W, in 1966, it was edited into a tv-movie in color, ""Too Many Thieves"" (thanks- Classic TV Archive for that tidbit) It also marked the US tv debut of Britt Ecklund, then the wife of Peter Sellers (and later Rod ""the Mod"" Stewart) Ludwig Donath was know for his Broadway performances in the musicals ""She Loves Me"" and ""A Family Affair""