E1 - The Space Society

Aired: January 02, 1958

A man hires Diamond to investigate an outer space society which he suspects is out to bilk his rich uncle since they have talked him into leaving the society $100,000 in his will.

E2 - The Dark Horse (a.k.a. The Allison Garvey Case)

Aired: January 09, 1958

Diamond is hired to protect a lady politician whose supporters fear she may be kidnapped by the opposition.

E3 - The Payoff

Aired: January 16, 1958

Diamond is hired to track down a gang of safe crackers and recover the money that they stole.

E4 - Double Jeopardy

Aired: January 23, 1958

A man convicted of a jewel theft years earlier still claims to be innocent even though the jewels start to show up on the black market as soon as he is released from prison.

E5 - Arson

Aired: January 30, 1958

Diamond is hired to investigate a fire in a fur shop which killed an accountant who was working there.

E6 - The Ed Church Case

Aired: February 06, 1958

A veteran journalist and a recovering alcoholic join forces in order to get a story on a protection racket.

E7 - Chinese Honeymoon (a.k.a. Trouble in Chinatown)

Aired: February 13, 1958

Diamond uncovers a protection racket when he decides to learn why a pair of his Chinese friends unexpectedly call off their upcoming wedding.

E8 - Rodeo

Aired: February 20, 1958

A cowboy performing in a Madison Square garden rodeo comes to Diamond for help after he discovers his saddle strap cut and suspects that someone is trying to kill him.

E9 - A Cup of Black Coffee

Aired: February 27, 1958

While taking a break from an all night drive at a roadside cafe, Diamond meets a woman who gives him a look convincing him she is afraid of something.

E10 - The George Dale Case

Aired: March 06, 1958

Diamond is beaten and rendered unconscious by a man he suspects is an art thief. When he recovers he discovers that a beautiful woman has subdued his attacker.

E11 - Juvenile Jacket

Aired: March 13, 1958

Diamond is hired by a woman to clear her son of charges of murder, since he is a member of a gang which robbed a liquor store and killed the sales clerk.

E12 - Pension Plan

Aired: March 27, 1958

A jewelry store owner comes to Diamond for help when one of his employees refuses to return gems he had been assigned to clean unless he is given a large cash stipend.

E13 - Short Haul

Aired: April 10, 1958

Diamond goes under cover as a truck driver in order to investigate a truck hijacking in which the driver was killed.

E14 - Another Man's Poison

Aired: April 17, 1958

Diamond sets out to find the man who is trying to kill him and who failed in his last attempt, leaving an innocent bystander dead.

E15 - The Purple Penguin

Aired: April 24, 1958

Diamond fails in his efforts to protect a shady night club owner who believes that someone is out to kill him.

E16 - Lost Testament

Aired: May 01, 1958

While investigating the death of an investment counselor, Diamond learns that a letter has recently been stolen from the deceased's attorney.

E17 - The Percentage Takers

Aired: May 08, 1958

Diamond is hired by a singer who finds himself being threatened by extortionists.

E18 - Widow's Walk

Aired: May 22, 1958

Diamond and his client are kidnapped by gangsters who threaten to kill both of them unless Diamond reveals the location of valuable paintings from another case.

E19 - The Bungalow Murder

Aired: May 29, 1958

Diamond is called upon to investigate the murder of a film producer and upon arriving at the scene of the crime learns that the police have not been notified of the man's death.

E20 - One Foot in the Grave

Aired: June 12, 1958

After a policeman friend of Diamond's is killed while on patrol, Diamond decides to do an investigation of his own to insure that the killer is brought to justice.

E21 - Snow Queen

Aired: June 26, 1958

Diamond uncovers a narcotics smuggling operation while investigating the murder of an art restorer who was killed in his workshop.