The hike is meant to bring their nature group together.

Emily, the sister who never lets her hearing loss hold her back.

Lauren, the sister who always feels a step behind.

Morna, who doesn’t get on with Lauren.

Ben, whose feelings for Emily border on obsession.

Dan, the quiet newcomer to the group.

Kai, who isn’t just on the hike to enjoy the wildlife.

And Alec, the one who knows all their secrets.

As the sun sets, a gunshot rings out on the nature reserve.

One of the seven is dead. And one of their number killed them…