When Stark (Ed Quinn) pits two research teams against each other, he gets a made- in- Eureka result that is as disturbing as it is mind-blowing. Will a top-secret drug give Eureka's townsfolk a competitive edge or a dangerous addiction? As the situation escalates, Carter's
(Colin Ferguson) daughter Zoe (Jordan Hinson) and Allison's (Salli Richardson-Whitfield) son get caught in the crossfire.

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