Requiem takes its inspiration from the psychological horror films of the late 1960s and ‘70s - Rosemary’s Baby, Don’t Look Now, and The Innocents, avoiding easy answers, and instead playing on uncertainty and ambiguity.
In 1994, a toddler disappeared from a small Welsh village, never to be seen again.
Twenty three years later, in London, the mother of rising cello star Matilda Gray commits suicide, without apparent reason.
Among her possessions, Matilda discovers tantalising evidence that links her mother to the Welsh girl’s disappearance all those years ago.
And so grief-stricken Matilda travels to Wales, determined to explore this mystery, even if it means unraveling her own identity. In the process, she uncovers long buried secrets in this remote community - including one secret more bizarre, terrifying and dangerous than anything she could have imagined. Dark otherworldly forces are gathering - they have been waiting many years for Matilda to arrive.
The Requiem cast includes Lydia Wilson (Matilda), Joel Fry (Hal), James Frecheville (Nick), Claire Rushbrook (Rose), Tara Fitzgerald (Hilary), Richard Harrington (Aron), Joanna Scanlan (Janice), Brendan Coyle (Kendrick), Sian Reese Williams (Trudy), Dyfan Dwyfor (Ed) and Ifan Huw Thomas (Harry).
In tonight's sixth and final episode, a badly injured Sean makes it to Dean House to warn Matilda that she is in mortal danger.
Matilda becomes increasingly worried about Davey’s safety with neither of his parents around to protect him.
Trudy pines after Hal and rues her harsh parting words. Graves grows suspicious of Kendrick and starts to wonder whether Matilda has been telling the truth all along.
Requiem airs tonight (Friday, March 16) at 9PM on BBC One.