TV Guide Syfy Tuesday

Part two of two. The search for fragments of an ancient Vulcan super-weapon reaches its end, as Riker wins the mercenaries' confidence by helping them attack the Enterprise, but his reward is a challenge to kill Picard. Patrick Stewart, Jonathan Frakes and Robin Curtis star

Odo risks his own neck to protect an unexpected defector, while Nog helps O'Brien with an enterprising plan. Starring Avery Brooks and Rene Auberjonois

The team heads for the planet Euronda in response to a plea for help, and soon discovers the inhabitants are in dire straits - but while O'Neill is quick to place all his resources at their disposal, Daniel has reservations. Sci-fi adventure, starring Richard Dean Anderson and Michael Shanks

A failed jewellery store robbery results in a murder that results in three coins being retrieved from a dead thief's stomach. It seems that the coins have an unsettling effect on whoever possesses them, and Hank and Captain Renard soon begin to exhibit unusual behaviour. Elsewhere, an old friend of Aunt Marie's comes to Nick with information about the circumstances of his parents' death. Fantasy drama, starring Russell Hornsby

Nick searches for a dragon-like monster that has killed two men in a warehouse with its fiery breath, but finds himself having to fend off the seductive advances of the creature's manipulative daughter. Fantasy drama, starring Russell Hornsby, with Danielle Panabaker

Return of the post-apocalyptic drama, starring Andrew Lincoln. After escaping from the Centre for Disease Control only seconds before it self-destructs, Rick and the group head for a military base, but find themselves fighting off a horde of zombies. When the dust settles, Sophia is nowhere to be seen, and the search for her leads to disaster for Rick's son Carl