Guest Stars DeForest Kelley as Dr. Leonard Horatio "Bones" McCoy Grace Lee Whitney as Yeoman Janice Rand Jim Goodwin as Lt. John Farrell Kim Darby as Miri Michael J. Pollard as Jahn David L. Ross as Security Guard #1 Ed McCready as Boy Creature John Megna as Little Boy Keith Taylor as Jahn's Friend Kellie Flanagan as Blonde Girl Steven McEveety as Redheaded Boy