INVOLUNTARY CONTROL is the fourth book in the Gray Spear Society series, which began with APOCALYPSE CULT. It's been months since their last mission and Aaron finds himself with a puzzling new mystery. A hacker with extraordinary skills has stolen money from the secret bank accounts of the Gray Spear Society. The theft should have been impossible. The search for the thief leads the team to Lemonseed, Illinois, a quiet farming community where Aaron finds an even greater mystery. The citizens of the small town are killing themselves in gruesome ways, and the authorities are just watching it happen. The intertwined investigations eventually lead him to a conspiracy to enslave the entire world. To win, he will need the help of two new team members with their own unique story to tell.