Silver Lie by Lana Dunmore

I chose to stay. I didn’t know what staying would cost.

There’s blood on Al’s doorframe. A word in the Ledger that no one wrote. And a woman on my doorstep with a briefcase full of evidence and a debt she refuses to pay.
Lachlan says we have six weeks before the man dismantling Cairndhu reaches the Ledger. Al hasn’t slept at the manor in three nights because he believes the weak point in this house is the one who can be carried out of it. Ewan’s missing sister left a note in a dead man’s warehouse — five words that change everything.

They gave me a crown. Now someone is coming for the kingdom.
I’m not the girl on the balcony any more. I’m the reason it exists.

Silver Lie is the second book in The Gilded Ledger series — a dark why choose romance with organised crime, escalating Dom/sub dynamics, and a heroine who chose all three men and will burn down anyone who threatens what’s hers.