The London Silver Vaults—for well over a century, the largest collection of silver for sale in the world. It has more locks than the Bank of England and more cameras than a paparazzi convention.
 
Not somewhere you can murder someone and vanish without a trace—only that’s what happened.
 
The disappearing act, the reports of a blinding flash of light, and memory loss amongst the witnesses all make this a case for Detective Constable Peter Grant and the Special Assessment Unit.
 
Alongside their boss DCI Thomas Nightingale, the SAU find themselves embroiled in a mystery that encompasses London’s tangled history, foreign lands and, most...