Guest stars:

Anthony Caruso          Bela Oxmyx
Vic Tayback             Jo Jo Krako
Lee Delano              Kalo
John Harmon             Tepo
Steve Arnold            Zabo
Sheldon Collins         Boy
Dyanne Thorne           Girl
Sharyn Hillyer          Girl
 
It's been 100 years since the U.S.S. Horizon visited the planet Iotia. What have the natives been up to? Kirk and the Enterprise crew quickly learn when they arrive to check on the planet's progress. The Iotians have developed a civilization based on a book the Horizon crew left: Chicago Mobs of the Twenties. Suddenly, Kirk and company are in the midst of a planet wide gang war. They adopt the language and customs of the natives to win them over to the Federation.

Sigma Iota: earthlike planet inhabited by humans, in a system on the outer reaches of the galaxy

USS Horizon: 100 years ago visited Sigma Iota and 'contaminated' the culture with a book about the chicago Mobs of the 1920's.

Fizbin: card game Kirk made up to gain escape from Oxmyx men.

Beta Antares 4:

vulcan neck pinch used quite often.

Quotes:
"That man's dead back there."
_______________________
"Lt. Hadley. Check the language banks and find out what a 'heater' is." Scott.