The Red King is a 2024 British crime drama television series, which was screened across six episodes from 24 April on Alibi. It was created and written by Toby Whithouse with Daniel O'Hara and Lisa Clarke directing. The Red King stars Anjli Mohindra as Grace, a detective sergeant posted to the fictitious island of St Jory, off the Welsh coast. St Jory is home to the True Way, a pagan cult which was established about 100 years ago by the Nancarrow family. Locals claim it no longer exists but celebrate festivals for the tourist trade. Grace and police constable Owen (James Bamford) investigate the murder of a boy, Cai, despite lack of cooperation from most residents. Main characters are former sergeant Gruffudd (Mark Lewis Jones), pub owner Lowri (Lu Corfield), her daughter Winter (Maeve Courtier-Lilley), doctor and Cai's father Ian (Marc Warren) and Nancarrow descendant Heather (Adjoa Andoh).