Finished: Force of Nature (Harper) Another great page-turner featuring Detective Aaron Falk, a federal agent in Australia who was introduced in Harper's first novel, Dry. In this one, five women employed by the same family run company head off onto team-building retreat in the remote bush land, and only four come back alive. The retreat is run by an adventure company, but the participants are sent off for three days on their own with no guides. Aaron Falk is called in, along with his partner, because they have been investigating the company for illegal activities, and their mole in the company, Alice Russell, is on the retreat, along with the owner's grown daughter who helps run the company, Alice's young assistant, the assistant's newly employed and troubled twin sister, and a co-worker of Alice's who went to high school with her and has known all her good qualities and bad qualities for years. With absolutely no reception in the remote area, Alice is the only person to get a brief phone signal and the phone call she makes is to Aaron where only a few fuzzy, but frantic, words can be heard before the message cuts out. Working with local police, Aaron helps interview the women who do make it out alive. The narrative goes back and forth between the current investigation and the days that the women actually spent on the retreat, detailing exactly what went wrong and who was responsible for the death of the very unlikeable Alice. With the threat of a former serial killer's son possibly roaming the same remote location which his father used to kill young women thrown in, we're left until the very twisty, turny end to find out exactly what happened. Meanwhile, during the ordeal, Aaron Falk faces some of his own demons as he remembers time spent with his father who died before Aaron could truly make amends with him about past troubles of their own.