From USA Today bestselling author Jennifer L. Hart comes a mother-daughter PI team, a cold case, and a little bit of luck It's St. Patrick's Day in Beantown, and Mackenzie Elizabeth Taylor needs the Luck of the Irish to solve her latest mystery-namely, who was the mysterious Uncle Al, the man who left her his apartment building as well as his PI business? But that personal investigation has to take a backseat to raising her teenage...