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.

Accountant Jerry Quinlan was an apparent suicide, until it is discovered that he had questions and suspicions about his company's books which he was about to report.

Protesting their living conditions, the prisoners of the state prison's isolation cell block have taken 3 hostages whom they will only release if O'Brien will make a public presentation of their case.

James Partridge, who once worked for British Intelligence, believes he was the target of a hit and run driver who was responsible for landing O'Brien in the hospital with a broken leg. This episode was the dramatic television debut of singer Sheila MacRae (wife of Gorden MacRae, and TV wife of Jackie Gleason in his ""Amecrican Scene"" magazine Honeymooners period)

""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""