Under Salt Marsh is an upcoming British Sky original television crime thriller series starring Kelly Reilly.
As a huge storm starts to form far out at sea a teacher and former detective, Jackie Ellis (Kelly Reilly), finds the body of her 8-year-old student, Cefin, who appears to have drowned.
This shocking discovery stirs up the town’s memories of an unresolved case from three years earlier—the disappearance of Jackie’s niece, Nessa, which ruined her career.
Cefin's death brings back Jackie’s old partner, Detective Eric Bull (Rafe Spall), to lead the investigation in a community where he previously failed.
Believing the two cases are connected, Jackie and Bull must work together to uncover hidden secrets in Morfa Halen before the storm hits and wipes away any evidence.