Primeval - Season 1 - Eps 3: Helen Makes Contact
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.
About Primeval

Title: Primeval
First Air Date: 2007-02-10
Last Air Date: 2011-06-26
Status: Ended
Rating: 7.4/10 (from 302 votes)
Language: EN
Seasons: 6
Total Episodes: 36
Network: ITV1 U&W
Genres: Sci-Fi & Fantasy, Action & Adventure, Drama
Production Companies: Impossible Pictures, ITV Productions, M6 Films, ProSiebenSat1 Produktion, BBC America
Synopsis
When strange anomalies start to appear all over England, Professor Cutter and his team must track down and capture all sorts of dangerous prehistoric creatures from Earth's distant past and near future.
Cast

Ciarán McMenamin
Matt Anderson

Ben Mansfield
Hilary Becker

Andrew-Lee Potts
Connor Temple

Hannah Spearritt
Abby Maitland

Alexander Siddig
Philip Burton

Ruth Kearney
Jess Parker

Janice Byrne
April Leonard

Ruth Bradley
Emily Merchant

Ben Miller
James Lester