As the town of Eureka holds a memorial service for Holly Marten, Fargo and Zane secretly work to retrieve Holly's "consciousness" from the Matrix Eureka computer mainframe. But with the installation of a new "Big Brother" DOD security program at GD, that isn't easy. Especially when strange hauntings begin to happen at GD, seemingly tied to Carter gaining new "powers".

original airdate-June 4,2012                     rating--1.97 million

song--Eureka Theme song--"Eureka On My Mind" by Bear McCreary