Matthew Rhys Investigates A Child Kidnapping in First Trailer for HBO's 'Perry Mason' - Watch!

Matthew Rhys is stunned silent after seeing the body of a child in the first full trailer for HBO’s Perry Mason origin series.

The upcoming series is based on characters created by Erle Stanley Gardner, and is an origin story for the famous defense attorney, set in 1931 Los Angeles amidst the Great Depression.

Perry Mason, is just getting started in his career, when the case of the decade breaks down his door. His relentless pursuit of the truth reveals a fractured city and just maybe a pathway to redemption for himself.

The cast includes John Lithgow, Tatiana Maslany, Juliet Rylance, Chris Chalk, Shea Whigham, Lili Taylor, and more.

Perry Mason will premiere next month, on Sunday, June 21 at 9/8c.