Primeval

1. S01E01Episode 1February 10, 2007 7.1Prehistoric creatures burst through a rip in time and our team find themselves running for their lives from the hungry jaws of a flesh-eatin
2. S01E02Episode 2February 17, 2007 7.1Mammoth spiders attack the London Underground, but in the darkness of the tunnels lies something more sinister still.
3. S01E03Episode 3February 24, 2007 7.6An ancient sea monster attacks two lifeguards in a municipal swimming pool while a mother makes a terrifying discovery when her utility room
4. S01E04Episode 4March 3, 2007 7.9When a flock of comical-looking dodos appear through the anomaly, no one realizes that they have brought with them a dangerous parasite.
5. S01E05Episode 5March 10, 2007 7.4Connor's carelessness reveals Rex's presence, and an aerial anomaly releases a new danger thirsty for blood.
6. S01E06Season's bestEpisode 6March 17, 2007 8.3Missing people could be the work of a new creature that arrived via a rift in time from the future.

Season 1 ranked & reviewed

1. S02E01Episode 1January 12, 2008 7.8Cutter grapples with Claudia's disappearance, whilst struggling to adjust to working with her replacement, Oliver Leek; The team try to re-c
2. S02E02Episode 2January 19, 2008 7.4An anomaly, to a period before an oxygen-based atmosphere, fills the 15th floor of an office tower with smoke, with gigantic worms inside.
3. S02E03Episode 3January 26, 2008 7.7An outdoor adventure park is terrorized by a hungry saber-tooth tiger.
4. S02E04Episode 4February 2, 2008 7.3The new anomaly detector detects a new anomaly opening in the middle of the River Thames, where Abby is taken by one of the creatures.
5. S02E05Episode 5February 9, 2008 7.6An anomaly in a drainage pipe leads a young girl chasing her dog into a bleak, sandy past landscape filled with burrowing monsters.
6. S02E06Season's bestEpisode 6February 16, 2008 7.9The team capture a Mammoth running rampant on the M25. The conspiracy is finally revealed as they attempt to kill Cutter and his team and de
7. S02E07Episode 7February 23, 2008 7.4The conspiracy unravels and people working closely on the project die -- or do they?

Season 2 ranked & reviewed

1. S03E01Episode 1March 28, 2009 7.1A crocodilian, a creature from the Eocene period which was mistaken for a god and worshipped in ancient Egypt is released through an anomaly
2. S03E02Episode 2April 4, 2009 7.3The team discover a creature that can camouflage itself at an abandoned house. As they investigate, they cross paths with an interfering cop
3. S03E03Episode 3April 11, 2009 7.4The team must dispose of a number of diictodons, cute-seeming but malevolent burrowing creatures who appear via an anomaly in a hospital, wh
4. S03E04Episode 4April 18, 2009 7.0Whilst Lester appoints Jenny as temporary leader and Connor perfects his machine to close anomalies, a Giganotosaurus, a huge carnivorous di
5. S03E05Episode 5April 25, 2009 7.0An anomaly appears in the flat of unsympathetic millionaire Sir Richard Bentley,ultimately turning him into a flesh-eating monster,slowly ev
6. S03E06Episode 6May 2, 2009 7.1Sarah establishes the purpose of the artefact - it can predict the whereabouts of anomalies. Johnson, anxious to claim it for herself, depos
7. S03E07Episode 7May 9, 2009 7.0An odd-looking, wounded dinosaur leaps through an anomaly in a scrapyard, pursued by a medieval knight, who thinks it is a dragon and causes
8. S03E08Episode 8May 16, 2009 7.0A giant ant from the same future location as the artefact comes through an anomaly and kills two guards. Jack, Abby's daft brother,from whom
9. S03E09Episode 9May 23, 2009 7.3A herd of rhinoceros-like creatures, embolotherium, come through a rift at a camp-site. Danny rescues Eve, the young woman Johnson and Wilde
10. S03E10Season's bestEpisode 10June 6, 2009 7.6Sarah and Becker battle giant insects who have come through the rift at Johnson's H.Q. whilst Abby, Connor and Danny pursue Helen Cutter thr

Season 3 ranked & reviewed

1. S04E01Episode 1January 1, 2011 6.8Connor and Abby struggle with life in the Cretaceous Period, meanwhile the A.R.C. has been rebuilt and updated with two new members.
2. S04E02Episode 2January 2, 2011 6.8When Connor looks up old friend Duncan, he doesn't expect to find him obsessed with creature sightings. Warning him of the elusive dock crea
3. S04E03Episode 3January 8, 2011 6.9A mysterious group come through an anomaly in a theatre, unknowingly followed by deadly tree creatures. As they attempt to escape, Matt inad
4. S04E04Episode 4January 15, 2011 6.7Whilst Abby is arguing with Burton,who wants to kill the menagerie,the team gets called to a school where a Therocephalian has come through
5. S04E05Episode 5January 22, 2011 6.8Abby and Connor travel to coastal Witchfield Cove,home to the legendary giant worm,after the death of a camper. They find the worm is no myt
6. S04E06Season's bestEpisode 6January 29, 2011 7.5Doglike Hyenadons come through an anomaly in the basement of a stately home and when the team go to investigate they meet ex-ARC worker Jenn
7. S04E07Episode 7February 5, 2011 7.0The ARC team gets called to a prison where they find themselves unable to control the anomalies and suspect that Ethan is manipulating them.

Season 4 ranked & reviewed

1. S05E01Episode 1May 24, 2011 5.9The team is called out when a giant,subterranean insect surfaces to drag victims to its nest - including Connor though Matt manages to save
2. S05E02Episode 2May 31, 2011 6.5A Liopleudon enters submarine HMS Gartside through an underwater anomaly, though the sub's captain bans the team from bringing their weapons
3. S05E03Episode 3June 7, 2011 6.7When a raptor comes through an anomaly at an art exhibition Matt pursues it back to Victorian England,where it is credited with being the my
4. S05E04Episode 4June 14, 2011 6.5Still naively believing that he is working to make free energy Connor completes his first task for Burton - creating an artificial anomaly,w
5. S05E05Season's bestEpisode 5June 21, 2011 7.1As the team explains to James that Burton was in league with Helen Cutter in wishing to return the world to its primeval state a huge T Rex
6. S05E06Episode 6June 28, 2011 7.0Abby and Matt follow Connor through the anomaly,finding themselves in a vast wasteland,in which they fight off predators before returning to

Season 5 ranked & reviewed