Lockdown (S04E03)

A mysterious group come through an anomaly, unknowingly followed by deadly tree creatures. As they try 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 find the creature, to discover the anomaly has closed and Emily is stranded. (Prime Video)