The critically acclaimed, internationally bestselling Declan Walsh series continues...

'Ring-a-ring o' roses, a pocket full of posies, a-tishoo! a-tishoo! They all fall down...'

Three years ago, Detective Sergeant Anjli Kapoor faced her most terrifying case—the brutal kidnapping and murder of two young girls, each found with posies in their pockets. The prime suspect, local florist Thomas Blackthorne, committed suicide, leaving the case unresolved and haunting Anjli ever since.

Now, history seems to be repeating itself. Another child has vanished, with all signs pointing to the same twisted killer. But how can it be, when the prime suspect is dead?

As Anjli is forced into a sickening treasure hunt around London by a new kidnapper, DCI Declan Walsh and the Last Chance Saloon team must delve into the past to uncover the truth. With time running out, can they decipher the dark secrets behind a seemingly innocent nursery rhyme and stop the killer before another innocent life is lost?

And can Declan navigate the dangerous spotlight cast upon him by Karl Schnitter's dying wish, which places him and his loved ones in the path of a ruthless vigilante?