When thirteen-year-old Gerald finds himself the heir to twenty billion pounds from an aunt he never met, he inherits with it a mystery surrounding his aunt's death and various artifacts in the British Museum.
Thirteen-year-old billionaire Gerald Archer and his friends Ruby and Sam Valentine go on vacation to India, hoping to forget about Mason Green and his diabolical quest, but secrets from Gerald's family history and Green's minions have the trio in trouble again.
After armed men invade the chalet where they are staying, Gerald and his friends escape through a secret tunnel, but once outside they are chased by men on snowmobiles, as Gerald wonders if this is the work of his old enemy, Sir Mason Greene.
s up to him to find out why. Along with his friends Ruby and Sam, Gerald embarks on a journey that will lead him from the British Museum to dodgy social clubs for the disgustingly rich to mansions in the English countryside to secret places far underground. Who was Geraldine Archer? And what secrets was she hiding? Unless Gerald, Sam, and Ruby can find out before the killer does, they may be next.