20/20 - Season 3 / Year 2013

Earth is visited by an alien species that threatens humanity's existence. Events unfold in real time through the eyes of five ordinary people across the globe as they struggle to make sense of the chaos unraveling around them.

Skywatch tells the story of an outcast teen, who hacks into a ubiquitous drone delivery system to pull a prank on his school bully, he accidentally crashes a dangerous prototype – and finds himself entangled in a life-and-death conspiracy. Based on the short film by the same name.

When a mysterious space vessel crash-lands on Earth, a young woman and a ragtag group of tactical soldiers make a fateful discovery that puts them face-to-face with the planet's greatest threat. As members of the crash recovery crew search for survivors among the wreckage of a mysterious crashed space vessel, they encounter mysterious predatory life forms more terrifying than they could have ever imagined. With this new threat unlocked, the search crew must fight for survival and what they choose to do with this discovery could change planet Earth as they know it.

For every sadistic psychopath...there were signs. Charm. Narcissism. Lack of empathy. Impulsiveness. Manipulation. Deception. These traits and others are the telltale Signs of a Psychopath. This harrowing half-hour archive series revisits some of the most brutal killers in modern history, reviewing news footage and the words of the killers themselves to see which terrifying traits each killer exhibited. What are the signs...of evil?

Jeopardy! is a classic game show -- with a twist. The answers are given first, and the contestants supply the questions. Three contestants, including the previous show's champion, compete in six categories and in three rounds (with each round's "answers" being worth more prize money).