Reporter Colleen Caruso was never good at math. A stingy ex-husband, a teenage daughter, and a rusted-out Ford Escort have multiplied her troubles. Tripping over a dead body while on her morning jog seems like another incident for the minus column. But then her new editor at the newspaper gives her a regular column detailing the investigation. He’s handsome, single, and just a bit mysterious. Suddenly, Colleen’s life is on the plus side. Unfortunately, 1 dead algebra teacher + 2 secret affairs + 4 suspicious suspects quickly adds up to 3 perilous “accidents” for Colleen. Which means Colleen needs to come up with the solution to the murder . . . before the killer removes her from the equation.