Can a guardian angel change history?February 10-14, 1929Mary Jane’s Chicago Police Officer fiancée, John McQueen, has gotten himself into deep trouble with no idea how to get out.He’s on a collision course with the St. Valentine’s Day massacre.With Mary Jane as his cheering section, his guardian angel, Charlotte, and a parish priest, Father Regan mount a last-ditch effort to save him.Can the St. Valentine’s Day Massacre be prevented?