Felicity’s past as a crusading hacker is revealed when someone uses a super virus that she designed to bring Starling City to a standstill. Meanwhile, Oliver and Thea work on…

Back “over here,” the Fringe Division investigates a bizarre phenomenon when 15 people up and down the Eastern Seaboard, all suffer retrograde amnesia from listening to their shortwave radios on…

The town huddles in a last attempt to locate the vanished Astraeus before it’s too late!

Beverly Barlowe resurfaces in Eureka seeking Carter’s help to free the Astraeus crew, and the rescue plan lands Carter in the crew’s virtual world.

Still reeling after what happened to Bobby, Dean becomes dangerously obsessed over finding a way to take down Dick Roman. Meanwhile, Sam decides to help a teenage girl look for…