For 30 years, Robin Symes and Christo Michailidis were inseparable as the power couple of the global antiquities trade. Yet since the death of Michailidis a decade ago, Symes and the Greek family of his late partner have been embroiled in a rancorous legal battle over ownership of the men's collection of ancient treasures. Now, Symes is being investigated over a missing group of multimillion pound art deco masterpieces created by Eileen Gray, one of Europe's most influential designers.