Beverly attends a family funeral, where a mysterious, spectral figure begins to woo the good doctor with his romantic overtures. Sci-fi drama, starring Gates McFadden

The holosuite malfunctions, trapping DS9's senior staff in a Las Vegas crime caper, where they must save one of the characters from seemingly certain death. Sci-fi adventure, starring Avery Brooks and Rene Auberjonois

Hammond orders O'Neill and the team to investigate a conspiracy theorist in Montana who claims he is an alien and in possession of a spaceship. While SG-1 is initially sceptical it begins to appear that there is some truth to his story. Sci-fi drama, starring Richard Dean Anderson and Amanda Tapping

Nick and Hank investigate when a child goes missing, uncovering several similar cases all linked by sightings of a mysterious ghostly presence. It transpires that the Weeping Woman - or La Llorona - is a ghost who kidnaps three children every Halloween and drowns them, hoping their sacrifice can atone for the loss of her own children, whom she also drowned. David Giuntoli stars

After experiencing disturbing visions, Nick discovers a fellow Grimm is torturing and murdering monsters that have harmed humans, spreading panic among the Wesen creatures. Renard and Juliette's connection moves to the next level. David Giuntoli stars

Rick and Shane take a blindfolded Randall 18 miles away from the farm, hoping to disorientate him enough that he and his fellow raiders will not cause any more trouble for the survivors. However, the two ex-cops disagree over his fate at the last minute, putting themselves in grave danger. Meanwhile, Andrea helps Hershel's youngest daughter Beth make a crucial decision