"Firestorm" by Iris Johansen is an explosive psychological thriller that follows Kerry Murphy, a gifted arson investigator with a traumatic past. Kerry works alongside her evidence-sniffing dog, Sam, to solve arson cases. However, her life takes a dramatic turn when the flames of a long-ago night come back to haunt her. A mysterious operative named Silver appears from out of the ashes, and together they must stop a killer who is determined to ignite hell on earth. The killer's methods are coldhearted and red-hot, and Kerry must confront her deepest fears to save innocent lives. The novel is filled with suspense, action, and psychological twists, making it a gripping read for fans of thrillers.