C. J. Moseley 
The Wrath of Atlantis: With Strange Aeons Book 2 [EPUB ebook] 

Professor Andrew Kemp hasn’t been having the best year, not since he stumbled on a secret Cabal of industrialists. Work has been fraught, his relationships ruined, even his best friend has abandoned him, but at least now it is finally over. Or so he’d hoped. It seems coincidence, the machinations of the surviving members of the Windermere Group, the Police, and his own friends will draw him once again into an adventure that will leave him questioning everything. Bizarre designer drugs, dark cults, and forgotten prehistory are going to make life very interesting for Andy and his friends.