: In 1412, a journeyman is found murdered in the Aachen Cathedral. Marysa’s husband is the prime suspect, leading her to team up with the Dominican monk Christophorus to uncover a web of forged relics and heresy. Der gläserne Schrein ( The Glass Shrine )

Petra Schier’s (also known as the Marysa Markwardt Trilogy ) follows a young relic dealer in 15th-century Aachen as she unravels dangerous conspiracies. While the third volume is widely known by the title Das silberne Zeichen ( The Silver Sign ), it concludes the high-stakes journey of Marysa and the monk Christophorus. Series Overview: The Aachen Trilogy

: In the final installment, Marysa faces personal and professional ruin. Her fiancé has not returned from a journey, she is secretly pregnant, and she is accused of fraud when the silver for her pilgrim badges is revealed to be silver-plated brass.

: Set in 1413 during the inauguration of the cathedral's new choir hall, a series of mysterious accidents and deaths threatens the celebration. Marysa must clear her stepfather’s name while navigating a conspiracy reaching the highest circles of power. Das silberne Zeichen ( The Silver Sign )