Killjoys Season 4 Episode 1 | Watch Killjoys Season 4 Episode 1 | Killjoys Season 4 Episode 1 - Season 4, Episode 1 br . br Watch Full [[ ]]br br . br Synopsis: A tech-themed twist, the "BB App Store", is unveiled. America has the opportunity to get the Houseguests trending, resulting in power apps or punishments that could crash their game. br br .