While Cutter tries to make sense of Claudia's disappearance, another anomaly appears. Raptors are running wild through a shopping centre, and the team are called in to sort out the problem.

Bizarre shaped giant worms, some of which are large enough to consume a human are moving around in a strange fog. It couldn't come at a worse time, as Nick is trying to adjust to the Lester's new PR, who suspiciously looks identical to Claudia Brown.

The team investigates an anomaly that has opened in a theme park, and are on the chase of a vicious sabre-toothed tiger. But somehow, the team suspect a human involvement with in the case.

A group of creatures, called the mer, slip into the city's canal system after floodwaters pour through an anomaly to the future. The case gets personal when Abby is swept underwater by one of them.

When a young girl is trapped in the Silurian era, the team find themselves in serious trouble - giant scorpians are terrorising them, and the anomaly has closed.

A gigantic mammoth rampages across the M25 motorway. Elsewhere, a future predator appears in ARC.

The team have to deal with the return of the future predator, when they're trapped in a bunker. Must one of the team members makes the ultimate sacrifice?