Type Episode
Date 1966-11-03
Tags hypnotism

Dagger of the Mind

Star Trek: The Original Series 1x09

The Enterprise visits the Tantalus Penal Colony, run by Dr. Tristan Adams. An apparent madman, Simon Van Gelder, reveals that Adams has been experimenting on the inmates with a device called the neural neutralizer.

Character TypeName
Helen Noel SubMarianna Hill
Simon Van Gelder SubMorgan Woodward
Tristan Adams SubJames Gregory
Name RoleCharacter
James Gregory Actor
Marianna Hill Actor
Morgan Woodward Actor
S. Bar-David Author
    Vincent McEveety Director


      Relation Sources
      Adapted by
      • Dagger of the Mind (1967-01)