A mysterious group come through an anomaly in a theatre, unknowingly followed by deadly tree creatures. As they attempt to escape, Matt inadvertently brings one of the group – Emily - back against her will. She promises to help him find the creature, in return for going back through the anomaly. In a frantic chase through the city, they track the creature down, only to discover the anomaly has closed, leaving Emily stranded.
Primeval on tonight ITV 1 and BBC America.
LEEE777 - Gotta admit I've been impressed, this is much more superior so far than the third season and if anyone is jumping on, I recommend checking out series one and two too!