After the horrors she suffered in Wales, Dr Sara Jones has returned to London and found a way to use her fledgling psychic abilities for good, belying the grim predictions of her former mentor, serial killer Eldon Carson. But when events cause Sara to doubt the trustworthiness of her visions, she is thrown into uncertainty. This happens just as Sara’s partner, ex-police Inspector Jamie Harding, accepts work from her late brother’s firm Thorndike Aerospace. It’s not just the dark morality of the arms trade that troubles Sara – it’s also her unsettling visions of Jamie’s new boss. But how can she trust what she’s seen? Is Jamie in as much danger as she fears?

Burdened by the shame of a fresh secret she cannot share, Sara Jones is desperate to set back the clock. She reaches for past certainties, agreeing to consult on a series of ritual murders for London’s Metropolitan Police. As Sara pieces together the perpetrator’s heartbreaking motives, she sees how eerily alike the two of them are. Sara Jones grows ever-more certain she can catch this killer - but less-and-less sure that she wants to.