Primeval

After the catastrophe of the last mission to find Connor, ARC has suffered greatly.

New field coordinator Jess welcomes Becker to the new ARC.

Matt is introduced to the new ARC, Becker and the new ARC boss Phillip Burton.

Eight years after his wife Helen mysteriously disappeared, Nick Cutter and a team of several others investigate reports of a large animal in the Forest of Dean, and discover that mysterious Anomalies in time and space are appearing and allowing prehistoric creatures to cross into the present day.

When a pest controller is attacked in the London Underground and landed in hospital poisoned with venom, Cutter, Claudia and the team investigate and discover the Underground is infested with giant, Carboniferous spiders. Cutter and the team soon learn that the true culprit is not the spiders, but a giant centipede, and they are sent in a race against time to get the centipede's venom after it poisons Stephen. Meanwhile, Connor gets thrown off the team after telling two of his friends about the Anomalies, and attempts to earn the team's faith back in the fight against the giant centipede. At the same time, Cutter's suspicions that Helen is alive on the other sides of the Anomalies increases.

The team are called in to investigate when a lifeguard is eaten by a Mosasaur at a swimming pool. Cutter discovers that they are dealing with a mobile Anomaly when the Mosasaur and the lifeguard's vomited remains appear at a reservoir and a cellar floods and is invaded by a Hesperornis. The rest of the team also learn that Helen is alive and on the other side of the Anomaly, and so Cutter is forced to go through and confront the woman his wife has become.

As Cutter struggles with losing Claudia Brown and with the other consequences of the failed mission into the past and tries to get the team to see that history has been altered, the team are sent to a shopping mall to contain an infestation of deadly, ruthless Raptors. Arguments among the team intensify when Cutter wants all the Raptors tranquilised and sent back through the Anomaly alive.

Cutter struggles with the arrival of the ARC's new PR guru, Jenny Lewis, who is physically identical to the lost Claudia Brown, yet is temperamentally a completely different person with no idea of her doppelganger; while Connor gets picked up by a beautiful young woman who is everything he is not, but Abby and Rex are both suspicious of her; and Stephen begins seeing Helen again. When an Anomaly releases a yellow, sulphuric mist inhabited by giant, carnivorous worms on a gleaming new high-rise office block, Cutter and Stephen are sent in to deal with the deadly creatures with Jenny, while back at the ARC, Connor and Abby try and find a fog-battling weapon.

Connor builds the team a new device designed to detect and locate new Anomalies, but the team become doubtful that the device works when it detects no Anomaly when a paintballer is torn to shreds in the luxurious Blue Sky Park resort. The team soon learn that the mysterious predator stalking the Park is a powerful and deadly sabre-toothed cat, and the race is on to find who is harbouring and protecting the sabretooth before it kills again.

The team investigate when an Anomaly opens in an Ancient Egyptian artefact at the British Museum, and when a Pristichampsus comes through, Cutter, Abby and Jenny are sent into a race after the giant crocodilian through Central London. Meanwhile, Connor and sparky Egyptologist Sarah Page discover that the Anomaly, the artefact and the creature hold an incredible ancient secret.

Cutter's new Anomaly predictions lead Jenny, Connor and Abby to a reputedly haunted abandoned house, where they soon learn that the Anomaly incursion dates back fourteen years and the house is inhabited by a deadly Camouflage Beast. The team also have to deal with the antagonistic suspicions of Detective Constable Danny Quinn on their interest in the house.

Cutter and the team head to a hospital to deal with an Anomaly and a Diictodon colony wreaking havoc on the hospital's power supply, and also have to help deliver a baby and stop a greedy journalist from getting proof of the creatures. Meanwhile, Helen Cutter and her clone army launch their attack on the ARC, and Helen reveals a secret about the future to Nick.

A year after becoming marooned in the past, Connor and Abby return from the Cretaceous to a changed and upgraded ARC, but Connor accidentally brings a Spinosaurus back to the present with them.

While Connor and Abby try to earn their old positions on the team back, Connor reunites with his old friend Duncan, who leads Connor to a series of homeless killings at a dock area that the team discover are the work of an elusive and deadly Kaprosuchus.

When an Anomaly opens at a theatre, a group of mysterious Anomaly travellers come through, followed by fast and deadly Tree Creepers. Meanwhile, Connor helps Philip design a new security system for the ARC, but it goes horribly awry and sends the ARC into lockdown, and time is running out for Connor to free Rex and Philip before the system suffocates them.

The team attempt to track a giant, underground insectoid predator from the future, and there is something about the creature that Matt isn't telling the team. Meanwhile, Philip shows Connor the true purpose behind New Dawn, and Abby becomes more suspicious of Matt and grows closer to discovering his secret, while Lester struggles at the ARC to make a good impression to Ms. Reece of the Cabinet Office for a knighthood.

When a Navy submarine in the North Sea discovers a giant underwater Anomaly, Matt, Connor and Abby join the Navy crew aboard, but things go awry when the submarine is pulled through the Anomaly into a prehistoric sea inhabited by giant pliosaurs. The team subsequently attempt to get the submarine back through the Anomaly to their time, while Lester struggles to stop an Admiral from nuking the Anomaly and potentially altering history.

When the team send a Raptor at an art museum back through the wrong Anomaly, Matt goes through into Victorian London in pursuit of the Raptor, and there he reunites with Emily and attempts to help her escape her grim fate of incarceration at Bedlam Asylum by her shallow husband. Meanwhile, Abby infiltrates Connor's lab to capture Connor's files on New Dawn for Matt.