Tom and Dick Smothers play Bones Howard and Ryan Fitzgerald, a TV cameraman and intrepid reporter, respectively, involved in the race to find the buried treasure of Al Capone on Alcatraz Island at the former prison where he was imprisoned.

In this sequel to "Rich Man, Poor Man," moviemaker Gretchen Jordache, the until-now unseen sister, strives to pull the family together after the murder of brother Tom and the disappearance of brother Rudy by first reestablishing contact with her soldier son, and then patching things up with her sister-in-law, Kate, Tom's widow.

A white female detective is partnered with a black male detective to find the person who is committing a series of particularly vicious murders. During the course of the investigation the two begin to develop an attraction to each other, but the situation is complicated by the fact that he is married.

Secret courier Matt Considine accepts the mission to escort chief witness Dvorak and his wife from San Francisco to a trial in New York. They have to cover 3,000 dangerous miles, because the drug mob wants to kill them at any price.

A human scientist capable of living underwater discovers similar alien life inhabiting human bodies, and looks to them for a clue to his origin.

Elizabeth is kidnapped, one of dozens of scientists held prisoner on the island of Felicitos, controlled by special mineral springs that render their victims completely happy and compliant. Dr. Smith is using them to build a rocket to take her away from our troubled planet in search of some better world, and Mark must find a way to counter the brain-washing and free the captives.