After a psychologically disturbed patient from the Tantalus penal colony, Dr. Simon Van Gelder, manages to escape to the Enterprise, Dr. McCoy begins to suspect that something is amiss on the colony. Captain Kirk and Dr. Helen Noel beam down to the planet to investigate. Written by
Did You Know?
Lethe (Susanne Wasson
) was named after the river in Hades in Greek myth. Those condemned souls who drank from it, forgot their past lives. Explaining her blank, vegetative stare from neutralizer "treatment". See more
When Van Gelder reaches the Enterprise's bridge, he attacks and disables a security guard. McCoy is on the bridge at the time, but even after Van Gelder is subdued, he never so much as glances in the unconscious guard's direction. See more
Enterprise log, first officer Spock acting captain. I must now use an ancient Vulcan technique to probe into Van Gelder's tortured mind.