Scott Arthur, who plays the younger Paul Bethell in Steeltown Murders’ 1973 timeline, has a host of TV roles under his belt, from 2014’s Da Vinci’s Demons to ITV period drama Victoria to the role of young Shadwell in Prime Video’s Good Omens plus voice work on video games Xenoblade Chronicles 3 and Elden Ring.
Sîon Alun Davies and Steffan Rhodri as Phil ‘Bach’ Rees
Steffan Rhodri is perhaps best recognised as Dave ‘Coaches’ from Gavin & Stacey and Reg Cattermole from Harry Potter and the Deathly Hallows Part 1 but he’s appeared in a great many screen roles besides, flying the flag for Wales (or Wealas) playing Welsh King Hywel in Netflix historical drama The Last Kingdom, and appearing in the first series of HBO’s House of the Dragon as Lord Hobert Hightower. Rhodri played Perry in excellent Welsh coming-of-age drama In My Skin, Judge Daniels in Keeping Faith, and DC Jones in Manhunt, also from the writer of Steeltown Murders.
Sîon Alun Davies is known for the role of DS Vaughan in Welsh crime series Hidden/Craith, and has also appeared in Hinterland, Endeavour, Britannia, Requiem and Prime Video’s The Sandman.
Gareth John Bale as DC Geraint Bale
It’s not often that a family member is cast as a real person in true crime TV drama, but it’s happened here – Gareth Jon Bale, with previous credits on The Indian Doctor, Requiem, Casualty, and a regular role on Welsh courtroom drama 35 Awr – is the nephew of DC Geraint Bale, the real officer who joined Bethell and Rees in the 2002 reinvestigation of the Llandarcy murders.
Sharon Morgan as Pat Williams
Welsh screen acting royalty, in Steeltown Murders Morgan plays the mother of Sandra Newton, the Neath teenager who was murdered in 1973, two months before Pauline Flynn and Gwendoline Hughes. Morgan has TV credits going back to the 1970s, and if a Welsh story is being told on screen, it’s a good bet she’s helping to tell it, from Under Milk Wood to children’s series The Snow Spider, The Chestnut Soldier and many more. She played Professor Edwards in A Mind to Kill, and appeared alongside Ronnie Barker in several sketch comedy shows, along with playing the role of Mary in Torchwood, 35 Diwrnod, Pobol y Cwm and more recently Sky’s Gangs of London and Netflix’s recently cancelled Lockwood & Co.
Keith Allen and Rhys Rusbatch as Dai Williams
Following up his role as serial killer John Cooper in The Pembrokeshire Murders (from the same director as Steeltown Murders), Keith Allen plays the older Dai Williams, stepfather to murder victim Sandra Newton. Allen has a long history of screen credits going back to the 1980s, with memorable roles in Jed Mercurio’s excellent medical drama Bodies, the BBC Saturday teatime Robin Hood, My Mad Fat Diary, Marcella and many more.
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