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 celebrity punch-up. 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 DC