Star Trek: "Dagger of the Mind"

Data
Title: Star Trek: “Dagger of the Mind”
Year: 1966
Network: NBC
Episode: the ninth (of twenty-nine) from season one; 50 minutes
Creator: Gene Roddenberry
Director: Vincent McEveety
Writer: Shimon Wincelberg
Starring: William Shatner, Leonard Nimoy, DeForest Kelley, James Gregory, Morgan Woodward, Marianna Hill
Music: Alexander Courage
I saw it: on video and TV several times, most recently a few days ago (have on DVD)
Synopsis: an escaped prisoner raises suspicions about a penal colony's methods

My reaction
Concept: Good science for a change, and a dramatic scenario.
Story:
Characters: It's a shame Helen Noel didn't become a regular character. I'd like to think Kirk found some excuse to transfer her off his ship.
Dialog:
Pacing:
Cinematography:
Special effects/design:
Acting:
Music:
Subjective Rating: 9/10 (One of my favorites, ). A deranged man loose on the ship, brain washing, the first Vulcan mind meld, completely believable science, and an intelligent female lead (who, incidentally, is very talented at wearing a miniskirt). What's not to like?
Objective Rating (Average):