S01E02: 'Day One'

The gang go in pursuit of Carrie, a girl who has been possessed by an alien with homicidal tendencies.

But these are no ordinary murders - the alien makes love to her prey, feeding off their climactic energy before turning them into ash.

But when Carrie turns her attentions on Owen - and then Gwen - will they make it out alive? And will they manage to save Carrie before the alien exhausts its host?