Desperate to clear Mahmood Mattan's name, his family have one last throw of the dice. It works - and finally his widow and three sons have their day in court. Forty six years after Mattan was hanged, a series of revelations are made which seriously undermine the case against him. And, explosive new evidence emerges which points the finger at who the real killer could be.

Presenter and Producer: Danielle Fahiya Sound Design: Cathy Robinson Original Music: Rhodri Llewellyn John Executive Producers: Karen Voisey and Andy Maguire Story Consultant: John Norton Production Manager: Andrea Deere

History Consultant: Chris Phillips. Archive: BBC Black Britain; ITV Wales

Zoe Davies - Laura Mattan Dean Rehman - Phillip Mattan; and Eddie Mattan