The account Alex discovers is a Treuhand account, one of many set up to protect Jewish families' identities from Nazi persecutors. This one has been slowly accruing value in a Swiss bank for more than half a century and has remained unclaimed - and undisclosed.
As she searches for clues to the fate of the family, Alex becomes entangled in an international web of treachery and murder. With each step of her investigation, she unknowingly exposes herself - and the lost heirs - to the dangers of revealing secrets that some would kill to protect.