You can find and download by Marc Layton as an ebook (available in Kindle format, which can be read on most devices) through the following official sources:
is the second book in the Erich Hasse Novel series. It follows Professor Erich Hasse as he investigates the legend of the Philosopher’s Stone, leading him into a dangerous hunt across the Mediterranean against supernatural forces. Evil Pact (An Erich Hasse Novel Book 2) - Amazon.com Download Evil Pact Marc Layton epub
: You can purchase the ebook directly from Amazon , where it is also available for free with a Kindle Unlimited membership . You can find and download by Marc Layton