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 Deere

History consultant: Chris Phillips
Newspaper reporter: Ian Dunnett Jnr
Archive: BBC Black Britain; ITV Wales.