Episode 572

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.

Raised by a swordsmith and trained to wield blades with deadly precision, Mizu is a highly skilled warrior — and she's out for bloody revenge.

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).

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

Married at First Sight is an extreme social experiment that follows six brave singles yearning for a life-long partnership as they agree to a provocative proposal: getting legally married to a complete stranger the moment they first meet. Four specialists – sexologist, Dr. Logan Levkoff; psychologist, Dr. Joseph Cilona; sociologist, Dr. Pepper Schwartz; and spiritual advisor, Greg Epstein – create what they believe are three perfect couples, based on scientific matchmaking. The couples will not meet until they walk down the aisle and see each other face-to-face, for the first time, at the altar. Over the course of several weeks, episodes capture each couple's journey as they go from wedding, to honeymoon, to early nesting, to the daily struggle of working on their marriage. After several weeks together, each couple must make a decision: do they remain together or decide to divorce?