Book excerpt: Chris Brennan is applying for a job as a high school government teacher, ready to step in as an assistant baseball coach, and his references are impeccable -- but everything about him is a lie. Widow Susan Sematov is proud of her son Raz, a high school pitcher being recruited for a full-ride scholarship to a Division I college. Heather Larkin is a struggling single mother who lives for her son Jordan's baseball games. Mindy Kostis fills her days with social events and too many gin and tonics, unaware her husband and her son, Evan, are hiding secrets that might destroy all of them.