A group of women go on a hike in the bush as part of an executive team-building exercise. They emerge battered and bruised and snake-bit and down one member of the group. A search begins. Aaron Falk received a phone call from the woman the night she went missing, because she is Falk's source on financial shenanigans in the company. What happened out there and where is the missing woman? The usual Jane Harper tale unfolds - it's never what you expect.