https://archive.org/details/das-plattfuss-geheimnis-knick-senk-spreizfuss
https://archive.org/details/robert-dugoni-auf-kalter-spur-1
https://archive.org/details/robert-dugoni-auf-kalter-spur-2
https://archive.org/details/was-ist-das-geheimnis-des-lichts-arte
https://archive.org/details/percival-everett-erschutterung
https://archive.org/details/the-kelly-green-men-was-geschah-1955-the-midnight-mansion
https://archive.org/details/konnen-kinder-geister-sehen-the-midnight-mansion