Guest stars:

Nancy Kovack            Nona, a Kanutu woman, married to Tyree
Michael Witney          Tyree, old friend of Kirk's
Booker Marshak          Dr.Mbenga, expert in Vulcan physiology, serving aboard the Enterprise
Arthur Bernard          Apella, villager having ties with the Klingons
Joe Romeo               Krell, Klingon

Mugatu

Crew Appearances:
Kirk, Spock, McCoy
Chekov
Scott
Nurse Chapel
Uhura
 
Kirk, Spock and McCoy beam down to a primitive planet visited by Kirk thirteen years ago.Spoke takes a hit from a flint lock rifle, courtesy of the Klingons. The balance of power is unbalance and Kirk decides to provide the peaceful hill people with weapons too, to save them from extermination.

Unnamed Planet: Medical treasure house, garden of Eden, Class M, earthlike,populated by humans, once visited by 'a brash young Lt. Kirk in command of his first planet survey party. A 'hands off' planet, politically.

Klingons- providing weapons to the villagers to take over the planet.

Quotes: