Entertainment Television

TV picks for April 15-21: 'Dallas,' 'Awkward,' 'The Bletchley Circle,' Ryan Lochte

Mysteries are solved or sparked this week on TV. "Dallas" clears up J.R.'s murder, while "The Bletchley Circle" launches an investigation. Smithsonian shows us how a British university found the remains of King Richard III, and Nat Geo offers a beautiful and scary look at the issue of our...