In a stately mansion in the Hertfordshire countryside, sisters Lois and Ebba throw a launch party for their new venture: Archipelago, a virtual reality game.In attendance are their celebrity investors including a glamorous British couple, a brooding Swedish financier, a Dutch banker and his film star wife, and a controversial politician.But beneath the glamorous surface, there are sordid secrets that include steamy affairs, deals in dirty money and anonymous death threats. So when eight of the guests are involved in a helicopter crash, it quickly becomes clear that it was no accident. It was murder.