Pretender '56 is a traditional mystery featuring an amateur sleuth. Looking back at April 1956, amateur sleuth, Tracy Shaw, sees that Philadelphia was abuzz with news of local girl Grace Kelly's marriage to a prince in a fairy tale wedding and not the murders of two young people in a lovers' lane. To the press, Catherine "Cassie" Kelly is simply the lovely maid at the house of a prominent Philadelphian. Jonathan Brien is known only as the handsome visitor who offered her a ride home. But an unknown assailant or assailants have denied a fairy tale ending to two young people with big dreams.Tracy's Aunt Julia takes the lead in learning about the victims and uncovering secrets that have lain buried for more than half a century. But then she must persuade those who know the story to face the truth of the events from so long in the past.