"Breaking Point" by James Gunn

Availability:

1. Space Science Fiction Mar 1953
2. Breaking Point, Walker 1972
3. Space Opera, ed. Brian W. Aldiss, Futura 1974
4. audio
5. text online

• Psychological piece
• Locked room SF-mystery (not a whodunnit, but a whatsgoingon)
• Written before Twilight Zone, but it has a similar feel.
  

Synopsis: The crew of a ship are subject to an alien presence that sees what they are mentally made of.