TV Guide Sky One Thursday

The Proactive Squad from Thames Valley Police use unmarked cars fitted with on-board video cameras to give an intriguing insight into vehicle crime and how it can be prevented, featuring footage of dangerous drivers on the overcrowded roads

The team sets sail on a mission to rescue 12 college students who were kidnapped and held to ransom by pirates during spring break, according to a deck-hand and her husband-to-be. McGarrett is sympathetic, having experienced a loved one being held hostage, but there are doubts over the couple's version of events. Guest starring Vanessa Minnillo and Nick Lachey

The team rescue highly advanced aliens from a collapsing world, but face a struggle to prevent their technology falling into the wrong hands

The NCIS team helps naval intelligence officer Akhil Ali locate a colleague who went missing while recruiting foreign assets as potential sources of intelligence. Callen is joined by psychologist Nate Getz as he tries to track down a man he believes was present for his training when he was young

An old school friend visits Will and alarms Grace by asking him to donate his sperm so she can have a baby. Megyn Price guest stars

Erotic dreams about Grace send Will to a therapist, who seems more interested in dating him than offering any professional advice. Jack talks to Karen about the way she has been treating Rosario. Comedy, guest starring Markus Flanagan

Part one of two. The naturalist explores the evolution of vertebrates over the past 500 million years, beginning with a look at how remarkable advances allowed primitive fish to make the radical move on to land, and then take to the skies with the advent of flight. He uses fossils of both ancient and living species combined with CGI and film to chart their journey out of the water to populate all corners of the globe

The crew pursues a bomber who has a grudge against the legal system, racing against the clock to catch the culprit before his next attack. Meanwhile, Danny receives an unexpected visit from his fun-loving brother, who has priorities other than socialising. Guest starring Dane Cook (Dan in Real Life)

The team investigates the murder of a woman employed in the navy's missile defence programme, looking into the case's connection to stolen technology. Meanwhile, a strict social worker stresses out Deeks, and Sam debates selling his boat

Nick and Hank investigate a string of murders, and learn their chief suspect - a freedom fighter on the run from assassins - is being harboured by Monroe and Rosalee. Guest starring Sebastian Roche

Chris and Simon arrest a biker who is armed with nunchucks, while Charlie and Ruffy pursue a boy racer. Elsewhere, pensioners cause problems on the road, and shopkeepers in America fight back against would-be thieves

The crew pursues a bomber who has a grudge against the legal system, racing against the clock to catch the culprit before his next attack. Meanwhile, Danny receives an unexpected visit from his fun-loving brother, who has priorities other than socialising. Guest starring Dane Cook (Dan in Real Life)