The Enterprise is host to some unruly guests - space hippies in search of planetary paradise. Kirk has trouble maintaining order amongst the visitors, but Mr Spock seems strangely sympathetic towards them.
The crew of the USS Enterprise are on the trail of a missing historian. The search leads Kirk and Spock to the planet Ekos where the streets are decorated with swastikas and patrolled by jack-booted soldiers.
Two bank robbers visit Morticia and Gomez on Halloween. Guest star: Don Rickles.
A Las Vegas gambling chip provides a clue for Pepper and Crowley as they hunt a team of bank robbers also guilty of rape and murder.
After the Hulk innocently helps a dangerous man escape from the police, David has to correct his mistake.
