WWE Friday Night SmackDown - Season 20

Flying is one of the safest forms of transport. But what happens when tragedy strikes? From human error and accidents to mechanical faults and design flaws, the success of aviation history is punctuated with disaster and catastrophe. It's rare, but it does happen. Follow experts as they determine what went wrong and work out how to prevent these horrific tragedies from happening again. Examine the wrecks and official records, and hear from eyewitnesses, passengers and aviation experts as we reconstruct some of the most tragic disasters in aviation history. Air Crash Investigation looks at what went wrong and how future disasters can be averted.

20/20 continues to combine hard-hitting investigative reports, newsmaker interviews and compelling human interest and feature stories.

Jimmy Kimmel Live features a diverse lineup of guests that include celebrities, athletes, musical acts, comedians and human-interest subjects, along with comedy bits and a house band.

Ancient Aliens explores the controversial theory that extraterrestrials have visited Earth for millions of years. From the age of the dinosaurs to ancient Egypt, from early cave drawings to continued mass sightings in the US, each episode in this hit History series gives historic depth to the questions, speculations, provocative controversies, first-hand accounts and grounded theories surrounding this age old debate. Did intelligent beings from outer space visit Earth thousands of years ago?

The First 48 follows detectives from around the country during these first critical hours as they race against time to find the suspect. Gritty and fast-paced, it takes viewers behind the scenes of real-life investigations with unprecedented access to crime scenes, autopsies, forensic processing, and interrogations.