In Petty’s epic conclusion to her Lock & Mori trilogy, Mori is out for revenge. Imprisoned in the English countryside with her brothers held as leverage, she's never felt so angry and helpless. She's desperate to save them from the clutches of Alice, so in exchange for their safety, Mori reluctantly agrees to help the old friend of her con-artist mother restart a criminal enterprise. She sends her brothers off to America and flees back to London where she plots the demise of her recently freed father. After a bittersweet reunion with Lock, Mori comes to the painful conclusion that he's no longer her ally and even stands in the way of her noble crusade.