current episode of Criminal is about our own Richard "Racehorse" Haynes. The episode contains local attorney, and former President of the Harris County Criminal Lawyers Association, Chris Tritico, recounting some of the more epic stories of Racehorse.
Phoebe Judge is the host and is a wonderful interviewer. She never gets in the way of the story.
Give it a listen.
For more information on the John Hill case, you can read Thomas Thompson's book, Blood and Money.
If you're curious about the T. Cullen Davis case, you can read Gary Cartwright's Blood Will Tell.