Carter must help an aged scientist recover his memory in time to stop a doomsday device from destroying the world. The old scientist, Dr. Thatcher, has not been the same ever since he didn't win the Nobel Peace Prize for creating a mutual assured destruction device, which fires a beam of irradiated uranium isotopes at a mirror on the moon, bouncing back at Earth to hit another target.
original airdate--August 22,2006
song--Eureka Theme song--"Eureka On My Mind" by Bear McCreary
Allusions: Zoe Carter refers to her father as the "town smokey"; this is a reference to Sheriff Buford T. Justice, commonly called "Smokey Bear", from the film Smokey and the Bandit.