Eureka: Season 1, Episode 10

1 - 10: Purple Haze

The town's residents start acting out of character, and perhaps more in line with their subconscious impulses. Vincent puts a man in the hospital, Allison nearly seduces Carter, Jo starts acting like a teenage party girl, Henry thinks everyone is using him and he gets drunk, Fargo and his neighbor begin fighting, and Taggart goes around town naked. Beverly eventually begins telling everyone's problems over the intercom and Allison tries to kill her. Carter, Zoe, and SARAH, the Carters' house, figure out that they are immune because SARAH is hermetically sealed. It is a pollen, Carter burns the plants responsible and the town returns to normal. At the very end, Henry tells people he is leaving Eureka.