Through the eyes of Godfrey (Keough, pictured) and a local police officer (Gladstone), the series takes us into the hidden world of the young girls accused of the murder - and reveals disturbing truths about the unlikely killer, according to the official description.
The cast also includes Vritika Gupta, Chloe Guidry, Javon 'Wanna' Walton, Izzy G., Aiyana Goodfellow and Ezra Faroque Khan.
Under the Bridge will be available to stream on Hulu on Wednesday, April 17.
The series is edited by Quinn Shephard and is produced by Samir Mehta, Liz Tigelaar and Stacey Silverman, Shephard, Godfrey and Tara Duncan.
Keough will direct with Gina Gammell. Geeta Patel directs the pilot and executive produces the episode. The series is produced by ABC Signature.
You can watch the trailer for Under the Bridge below.