TV Guide Sky Sci-Fi Thursday

Evolutionary zoologist Nick Cutter investigates a sighting of a mysterious animal and soon finds himself confronted by a gigantic creature believed to be extinct. As he enlists the help of his team to discover how it managed to travel to the 21st century, a deadly predator goes on the rampage. First episode of the fantasy drama, starring Douglas Henshall and Hannah Spearritt

Cutter investigates an invasion of giant spiders on the Underground and soon finds himself confronted by a far more ferocious creature - the 15ft arthropleura, a prehistoric relative of the millipede. Stephen tries to save his old friend but is attacked in the process and has a vision of Helen, who delivers a message intended for her husband. Meanwhile, Abby is unimpressed by Connor's romantic overtures. Fantasy drama, starring Douglas Henshall and James Murray

The Enterprise receives an unexpected visitor when Lumerian ambassador Ramid Ves Alkar is beamed aboard to mediate a dispute in the Rekag Bironi system

A spatial distortion damages Voyager, trapping several crew members and leaving Janeway injured. The race is on to reverse the process before the entire ship becomes immobilised permanently.

Sisko's promotion results in Dax being given command of the Defiant and Odo's loyalty to the Federation is tested by a fellow shape-shifter promising a reunion with the Founders. Sci-fi adventure, starring Terry Farrell and Rene Auberjonois

Cutter tries to find the mobile anomaly through which an ancient sea monster has travelled to the 21st century, attacking two lifeguards and a young boy at a swimming pool. Meanwhile, Claudia's suspicions are confirmed when the body of a diver is found - with a message from Helen attached. Fantasy drama, starring Douglas Henshall and Lucy Brown

Helen refuses to answer Lester's questions about the anomalies and manages to escape custody, leaving behind a flock of dodos - which is playing host to deadly parasites. One of the creatures bites Tom, giving him a compelling urge to attack - and prompting Cutter and the team to launch a desperate bid to prevent a pandemic. Fantasy drama, starring Juliet Aubrey and Ben Miller

Daniel is trapped in the body of an old, dying man by the sinister invention of former Goa'uld enemy Ma'chello. Sci-fi adventure, starring Michael Shanks

A spatial distortion damages Voyager, trapping several crew members and leaving Janeway injured. The race is on to reverse the process before the entire ship becomes immobilised permanently.

Eric devises a plan to capture Russell by offering him the vampire's ultimate fantasy - the ability to survive exposure to daylight. However, his plot involves asking Bill to place Sookie in further danger. Meanwhile, Jason struggles to understand the latest revelation about Crystal, and Arlene asks the wiccan Holly to help come up with a way to end her pregnancy

Eric grapples with his conscience as he puts his plan to kill Russell into effect, and Tara learns surprising news about Sam, whose rage resurfaces after he discovers Tommy's latest antics. Meanwhile, Lafayette turns to Jesus for help after another bad V trip, and Sookie grows tired of living alongside the supernatural world - prompting her to imagine a life without Bill and his fellow vampires

Cutter tries to find the mobile anomaly through which an ancient sea monster has travelled to the 21st century, attacking two lifeguards and a young boy at a swimming pool. Meanwhile, Claudia's suspicions are confirmed when the body of a diver is found - with a message from Helen attached. Fantasy drama, starring Douglas Henshall and Lucy Brown

Helen refuses to answer Lester's questions about the anomalies and manages to escape custody, leaving behind a flock of dodos - which is playing host to deadly parasites. One of the creatures bites Tom, giving him a compelling urge to attack - and prompting Cutter and the team to launch a desperate bid to prevent a pandemic. Fantasy drama, starring Juliet Aubrey and Ben Miller