As Halloween descends on Sin City, the CSIs investigate when a creepy mannequin prop inside a popular haunted house turns out to be a real dead body. Also, Catherine enlists the help of Folsom to search for her friend who disappeared.

Tennant and the NCIS team suspect foul play when they investigate a fatal car crash involving a Navy officer who turns out to be an imposter. Also, Whistler finds herself in danger when she goes undercover to learn the truth behind the accident.

The key to understanding the universe seems to be understanding its smallest components. But reconciling the two has proved to be a tremendous scientific challenges as the behavior in the quantum realm bears little resemblance to the universe we know. This program explains some of the strange behavior scientists have discovered at the smallest scales.

While in Florida caring for her ailing father, Athena and Bobby investigate the disappearance of her childhood friend from 45 years ago.

In the aftermath of her abduction, the walls between McCall’s family and vigilante life continue to crumble as those closest to her must come together for the first time to save her.

Boimler's holodeck movie sequel tries to live up to the original.