Corporate team building trips are rarely pleasant things. This quickly turns into a nightmare when it turns out that only four of the group of five co-workers have returned... A thriller from the producers of Gone Girl and based on the best-selling novel by Jane Harper. Starring Eric Bana. Detective Aaron Falk returns to solve a disappearance in the Australian bush. On the night of her disappearance, Alice Russell made only two calls - one for emergency care and one for Aaron. It quickly turns out that each participant of the expedition presents a slightly different version of events. During an investigation that takes him deep into the dark forest, Falk discovers the secrets hidden in the shadows of the mountains. He tries to unravel the tangle of personal and professional relationships between five women who are no strangers to suspicion and betrayal - but will it be enough to kill?