Born in the first decade of the twentieth century, siblings Martha (known as Patti) and Griffith Thomas lived together their entire lives. By 1976 both Patti and Griff were retired and, although relatively wealthy, they led a simple and frugal life in their farmhouse near Llangolman, West Wales. In December that year the siblings were both found dead in their home in mysterious circumstances. An investigation was carried out but the answers it produced did not satisfy many local people. Over the last decade or so there have been several developments, including a connection to a Welsh serial killer and the surfacing of new, potentially vital information. This led Dyfed Powys police to announce in October 2022 that they were re-examining evidence in the case.

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Sources: For a full list of sources please see click here. 

https://amp.theguardian.com/uk-news/2023/jan/28/the-killer-could-still-be-among-us-two-elderly-siblings-and-a-brutal-that-mystifies-locals-nearly-50-years-BBChttps://www.bbc.co.uk › news › uk-...

BBChttps://www.bbc.co.uk › news › uk-...Griff and Martha Thomas: Forensic review into 46 year-old deaths

Daily Mailhttps://www.dailymail.co.uk › newsBullseye killer John Cooper linked to a historic double murder

greglewisinfo.comhttps://greglewisinfo.com › the-bull...The Bullseye Killer – and the Llangolman deaths - Greg Lewis

Tivyside Advertiserhttps://www.tivysideadvertiser.co.uk › ...Police reopen investigation into Ffynnon Samson deaths

North Wales Livehttps://www.dailypost.co.uk › newsTop expert suspects killer is linked to deaths at farmhouse

South Wales Guardianhttps://www.southwalesguardian.co.uk › ...Pembrokeshire murderer's name 'not ruled out' of Llangolman deaths

Western Telegraphhttps://www.westerntelegraph.co.uk › ...Ffynnon Samson deaths: Vigil held for Griff and Patti Thomas

Wales Onlinewww.walesonline.co.ukThe five other unexplained deaths linked to Pembrokeshire Murders killer ...

Daily Mailhttps://www.dailymail.co.uk › newsBullseye killer John Cooper linke

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