Mahmood Mattan came to the UK from Somalia to seek a better life.
He met and fell in love with a local woman from Cardiff. But in the 1950s, their mixed marriage was frowned upon.
And that racial hostility simmered away in Mahmood's life, and probably played a part in his death. 
He was arrested, convicted and hanged for the murder of shopkeeper Lily Volpert.
His execution took place 70 years ago - and it would take decades for his name to be cleared.
And even today, the repercussions of that miscarriage of justice are still being felt.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 DeereHistory consultant: Chris Phillips
Newspaper reporter: Ian Dunnett Jnr 
Archive: BBC Black Britain; ITV Wales.

Mattan: Injustice of a Hanged Man

1. Prologue: It Began with a Murder

Somali seaman Mahmood Mattan was hanged for a crime he didn't commit.
On March 6th, 1952, Lily Volpert was murdered in the shop she ran in Cardiff's Tiger Bay.
What followed was a flawed police investigation and prejudiced trial that ultimately led to Mahmood being hanged for a crime he was not responsible for.
After 46 years, his innocence was finally proved in a court of law. But the impact of Lily's murder and Mahmood's execution are still being felt by two families today.
For the first time, we hear from the family of murder victim Lily. Ruth was just yards away...