Nadia: The Secret of Blue Water (1990-1991)

Contestants guess hidden phrases by guessing letters one at a time. Contestants win money or prizes, as determined by a spin of the wheel, for each correct consonant they guess. But they have to pay to see what vowels are in a puzzle. The contestant that has amassed the most winnings at the end of a game goes on to play the bonus round, in which the player can win even more -- prizes frequently seen in the bonus round include automobiles, vacations and more cash.

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

WarnerMedia announced today that it is partnering with All Elite Wrestling (AEW), the new professional wrestling promotion featuring a world-class roster of diverse male and female wrestlers, giving fans a new wrestling experience for the first time in 20 years. WarnerMedia and AEW together will build this powerhouse sporting league from the ground up and will begin airing weekly matches later this year. With this league, AEW is introducing a new generation of wrestlers to fans, offering fun, gripping and authentic athletic matches that will make wrestling more accessible to a broad audience.

All Creatures Great and Small chronicles the adventures of a young country veterinarian.

The Irrational follows world-renowned professor of behavioral science Alec Mercer as he lends his unique expertise on an array of high-stakes cases involving governments, law enforcement and corporations. His insight and unconventional approach to understanding human behavior lead him and the team on a series of intense, unexpected journeys to solve illogical puzzles and perplexing mysteries.