Eleven guests. Three nights. One murderer...

This is the haunting and atmospheric new thriller from rising star of crime fiction, Rachael Blok.

In a gorgeous mansion in the Hertfordshire countryside, sisters Lois and Ebba prepare to launch their new venture. Archipelago is an exploitation-free tech company whose virtual reality game promises to unite the worlds of technology, politics and the environment.

Invited to the launch party are their investors: current and ex-politicians, international business moguls and activists, one of whom - Marieke - has been receiving online abuse and death threats for her views on eco-politics.

DCI Maarten Jansen has been summoned to join the house party. He is sure the threats are from online trolls with nothing better to do - he's only offering police protection because his boss wants to put the VIP guests at ease. But when eight of the guests are involved in a suspicious helicopter crash, Maarten starts to uncover long-buried secrets - and a murderer in their midst...