Brian L. Porter 
Glastonbury [EPUB ebook] 

After millionaire Malcolm Capshaw hires Joe Cutler and his team to search for a fabled artifact, they enter a maze of lies, murder and betrayal.
The real purpose of their search is soon exposed, as an old London crime family displays an unusual interest in an ancient town where Christianity laid its roots in England.
Aided by the enigmatic professor Lucius Doberman, Joe and his team must solve the ancient mystery that lies in the shadows of Glastonbury, or die trying.