Episode six of Fishlock's Choice revisits the story of the tragic events of November 1925, when the Dolgarrog dam in Conwy Valley burst.
The swollen, roaring river carried wreckage down the hill into the village of Porth Llwyd, destroying houses, the church and a bridge. Ten adults and six children were killed.
Elsewhere in the programme: The story of one of the architects of modern secondary education, born in humble surroundings in a small village in Conwy.
The son of a shoemaker, Sir Henry Jones became a university lecturer and philosopher, and was knighted for his work to secure education for those between 11 and university age.
In Jones’ home village of Llangernyw, Trevor Fishlock meets the dedicated group of volunteers who are keeping his memory alive. They have turned the house in which he grew up into a museum, which captures Welsh life towards the end of the 19th Century.
Trevor also walks the Conwy Valley to learn about a colony of artists that set itself up in Betws y Coed, and to hear the story of the man who set up his own Eisteddfod after rejecting the National Eisteddfod for being too English.
Watch Fishlock’s Choice tonight at 22:40 on ITV Cymru Wales, or catch up on the ITV Wales programmes page.