Police are refusing to rule out a potential link between the deaths of a brother and sister whose bodies were found in Pembrokeshire more than 45 years ago and one of Wales’ most notorious ever serial killers. Martha and Griff Thomas were found dead at Ffynnon Samson - the farmhouse they lived at together - in the village of Llangolman in December, 1976.
An inquest held the following year concluded that Mr Thomas had killed his sister after a row and then died after setting himself on fire. It was therefore widely accepted that nobody else was involved in the deaths, or in the fire that was started inside the house. You can get the latest WalesOnline newsletters e-mailed to you directly for free by signing up here.
However, speculation has circulated for decades that a third party may have been involved. This speculation intensified in the years that followed when brother and sister Richard and Helen Thomas were killed in their home at Scoveston Park before it was set on fire in December, 1985. Chillingly, that happened around 20 miles from where Martha and Griff Thomas were found dead.
