Episode 4

History's Greatest Mysteries will investigate a wide range of historically compelling topics and the mysteries surrounding each including the Titanic, D.B. Cooper, Roswell, John Wilkes Booth, and more. Each program within the franchise will showcase fresh, new evidence and perspectives including never-before-released documents to the general public, personal diaries and DNA evidence to unearth brand-new information about these infamous and enigmatic chapters in history.

American Idol is an American singing competition show, where contestants perform in front of a panel of star judges, representing the music industry. The winner is determined by viewers' vote.

Amateur sewers take on challenges as they compete to be named Britain's best home sewer.

Real Time with Bill Maher includes an opening monologue, roundtable discussions with panelists, and interviews with in-studio and satellite guests. Politico hailed Maher as "a pugnacious debater and a healthy corrective to the claptrap of cable news", while Variety noted, "There may not be a more eclectic guest list on all of television".

They're fighting to save patients while their personal lives are brimming with drama and intrigue. Everything's at stake on the emergency ward.