Juno Dawson's Her Majesty's Royal Coven series comes to a conclusion, as fledgling witch Theo agonises over whether to accept a highly dangerous bargain from Lucifer which could save her beloved coven.

Niamh, Ciara, Leonie, Elle and Theo. Five very different witches with one thing in common: they were unwittingly chosen by Lucifer, the demon king of desire, to fulfil a dark prophecy: Satanis will rise and the daughters of Gaia will fall.

The coven is reunited—but broken. Niamh is back from the dead... but she hasn't come back alone. Elle mourns a son she never had. Ciara languishes in a prison for witches, and Leonie reels from a very unexpected surprise.

Meanwhile, Lucifer offers fledgling witch Theo a deal: if she helps him, her coven—her family—will be spared. But the magic he asks for will take her out of London—out of time, entirely.

The final confrontation between good and evil in the conclusion to the saga of Her Majesty's Royal Coven.