She already knows who did it. That was never the hard part.
Detective Inspector Helena Cross is summoned, by an invitation with no signature and no explanation, to the Vesper Club - London's most private gambling house, where the wealthy have lost and won fortunes behind an unmarked door for a hundred and eighty-five years. Sir Edmund Ashworth is dead at the card table, poisoned by his own hand of cards. And his widow, Victoria - composed, brilliant, impossible to rattle - is the one who did it.
Helena knows that almost from the start. What she doesn't know is that the case will lead her straight back to her own mother: a woman expelled from this same club decades ago, dead of an overdose that was never properly investigated, and a man who has spent seventeen years in prison paying for a murder someone else committed.
The deeper Helena digs, the more the case stops being about who killed Edmund Ashworth - and starts being about what she's willing to risk to finally give her mother's death the truth it was denied. Including the possibility that the woman she's building a case against might also be the sister she never knew she had.
For readers of Tana French and Mick Herron - a slow-burn, character-driven howcatchem where the tension isn't discovering the killer. It's watching what the truth costs everyone left standing once it finally comes out.
A wrongful conviction, seventeen years in the making.
An institution with two centuries of secrets and no one left to answer for the oldest of them.
Two women, one absence, and a debt neither of them can walk away from.