American-born Cherise Williams believes herself to be heir to an old Irish earldom, and she's come to Dublin to claim her heritage. Megan Malone chauffeurs Cherise to the ancient St. Michan's Church, where the woman intends to get a wee little DNA sample from the mummified earls. But before she can desecrate the dead, Cherise Williams is murdered. With rumors of famine-era treasure on the lands owned by the old Williams family and the promise of riches for the heirs, greed seems a likely motive. Megan attempts to steer the investigation away from her boss Olga and solve the murder with the help of the dashing Detective Bourke.