Gloria Lamerino's goddaughter, Mary Catherine Galigani ("MC" to her friends), needs a change in her life. She decides to move back to her hometown of Revere, Massachusetts, thereby ridding herself of an abusive relationship and an unfulfilling job in Houston, Texas. At least that's the plan. When two homicides disrupt MC's peaceful return to Revere, Gloria applies her detecting skills to helping the police solve the crime.