Paul Mannering 
Heroes of Heresy [EPUB ebook] 

When Arthurian monk Habeas Yeast found religion he stopped looking for anything else. Now religion is looking for him. The recently possessed Vole Drakeforth teams up with Pimola Goosebread, passionate tea-critic and leading research scientist in particle physics. Seeking the truth behind the very nature of reality, these unlikely heroes find themselves the target of the world’s most customer-focused professional killers. This is the prequel you will want to read first, but really need to read last for it to make sense.