Matthew's attempt to rescue Diana from Juliette goes horribly wrong and Diana finally discovers just how lethal her magical powers can be. As Matthew lies dying, Diana must strike a dreadful bargain with the goddess and make the ultimate sacrificial pact with enduring consequences. A failed coup at the Congregation sees its most powerful and terrifying members go rogue, as they close in fast on Madison, where a group of daemons, vampires and witches are now residing together. Baldwin tries to alert Matthew that time is up but he can't reach him. It's a deadly race against time for Diana to take flight with Matthew before their pursuers arrive.
Diana Bishop, a historian and reluctant witch unexpectedly discovers a bewitched manuscript in Oxford's Bodleian library. This discovery forces her back into the world of magic in order to unravel the secrets it holds about magical beings. She is offered help by mysterious geneticist and vampire, Matthew Clairmont. Despite a long-held mistrust between witches and vampires they form an alliance and set out to protect the book and solve the mysteries hidden within while dodging threats from the creature world.
A Discovery of Witches - Series 1, Episode 8 Synopsis and Schedule