What to read after Jennet Preston's?

Through out history magical relics were scattered across the globe, each pertaining to some event of their time. Forgotten, these relics faded from most peoples memories, until four recently orphaned teens are brought to the knowledge of them by their young and attractive foster mother, Jennet Preston. With these relics and a special spell book called the Libro Potentia almost anything is possible.

With the hope of bringing their parents back and putting their lives in order Mitch, his sister Mindi, Samantha, and her brother Ryan set out alone to retrieve these magical items. Their travels will lead them into a dark world of myth. Their journeys will take them to the dismal heights of the Empire State Building facing off with the spirits trapped inside. Then into the lair of a revengeful vampire mafia that runs the criminal underworld of New York. They'll fly across the globe to the zombie invested WW II battle fields of Germany. Out wit a seductive witch on the Las Vegas strip. Bust into a snowy Nazi fortress in the mountains of Argentina. Search for the legendary spell book in the Library of Congress. All while they are being hunted by a secret agency in charge with keeping the world of myth from the modern worlds knowledge.

Their trust among themselves will be tested as the darkness encroaches around them. They'll discover abilities in themselves they never knew were possible while pushing their personal character to its limits. This six book series begins here with Jennet Preston's Shadow Relics.