Taggart achieves a medical breakthrough while Fargo invents a device that bridges the divide between computers and human brains.

A former resident returns to Eureka and creates mayhem which threatens Global Dynamics, prompting Stark to take action.

Carter investigates an unusual car accident. Meanwhile, Stark, under the stress of completing a project on time, pressures two research teams to produce results.

A sleeping weapons system is accidentally awakened by Fargo and Spencer. Henry tries to avert the pending catastrophe with the help of a retired, nonsensical scientist.

An unpredictable researcher accidentally unleashes a dangerous artifact which was previously hidden by Nathan Stark.

After hosting a movie party, Spencer is found the next day in the middle of a crop circle, claiming he was abducted by aliens; and then other people who attended…

An accident leads a U.S. Marshal and a teenage girl (who later is revealed to be his daughter) to a peculiar town populated by scientists and their families where 10-year-old…

After attacking Gadreel, Dean leaves with Crowley to track down Metatron and kill him. Meanwhile, Gadreel takes Castiel into Heaven to try and break Metatron’s connection to the angel tablet,…