BBC World Service
In 1989 Appapillai Amirthalingam was assassinated at his home in the Sri Lankan capital, Colombo.
He was a politician - the most prominent democratically-elected leader of the Tamil community.
Throughout his career, he had been determined to campaign for political rights by peaceful means, but Tamil Tiger rebels branded him a stooge and killed him.
Twenty years on, the Tamil Tigers have been defeated by the military.
Appapillai's wife and son travel back to their homeland in search of his legacy in an attempt to understand what the future holds for Sri Lanka's Tamil people.
For an outline of this story, go to click A Widow's Journey: Audio Slideshow