Senator Alice Wen is ramping up pressure to move forward with the mission to Titan, and it has all of Eureka off balance. Henry and Grace are arguing over whether a necessary but risky heart procedure is worth going to space for. Dr. Saint-Augusta cranks up her rate of production in order to complete the Astreus vessel according to the new timeline, and Dr. Fung's accelerated schedule causes some disturbances in the interstellar communication device he's working on – frequencies from his device are causing mini-earthquakes throughout the building.

Wen enlists Carter's help for extra security at GD. Carter's not sure which is worse: having to leave his sheriff work behind, or having to wear a suit. Allison's ready to go back to work after freeing her brain from Beverly Barlowe's grip, but Senator Wen insists she needs more rest. This causes friction between her and Carter, who agrees with Wen's assessment. But when Carter nearly falls into an elevator shaft, the focus shifts. It seems anything in GD made of tungsten (for example, the elevator) is disappearing, then reappearing in another form.

Carter and Deputy Andy deduce that the robotic mites assigned to building the Astreus craft have somehow gone into overdrive and are building as many spacecrafts as possible. Zane, the only person who understands how to stop them, is nowhere to be found.

original airdate August 15,2011                    rating-2.23 million

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

1. "Car Wash" by Rose Royce