The collector / Fiona Cummins.

Enhanced descriptions from Syndetics:

"A crime novel of the very first order." --David Baldacci

In Fiona Cummins' new novel of taut psychological suspense, an elusive psychopath meets his match in a detective who's just as ruthless--a woman who knows all too well that the best mind games are played in the dark . . .

It was only months ago that Detective Sergeant Etta Fitzroy was held captive by serial killer Brian Howley. Incredibly, she escaped. But so did he. What was found in the macabre museum Howley called home was unnerving enough. For Fitzroy, what the Butcher of Bromley didn't leave behind chills her to the bone: not a single trace of his most recent abductee. All Fitzroy wants to know now is . . . dead or alive, where is the girl?

Hiding in plain sight with a new name and a new identity, Howley is making plans for an ingenious new start, and he's daring Fitzroy to come along. Clue by terrifying clue, she's following in a killer's footsteps, but even she can't imagine where they'll lead. Because Howley's endgame has a terrifying twist--one that will not only change his fate, but the fate of everyone Fitzroy is risking her life to protect.

Praise for Rattle

"Harrowing and horrifying." --Val McDermid

"Up there with the best of them . . . an exceptionally creepy psychopathic killer." -- The Times

"Gripping. A total page‑turner." --D E Meredith

"Left me breathless with fear." --Michelle Davies