The Prophets of Baal - The Toby Le Tocq Mysteries, #1

If you love that old detective genre classic the English country house murder, well here's a new twist for you! Naïve young private investigator Toby Le Tocq is soon all at sea in more ways than one when he takes a casual interest in a two hundred year old case. Locals are strangely divided. Some want to drive him away, whilst two beautiful and aristocratic women compete for his affections. But is it really just blind luck? In the blood of the two rivals flows an ancient power of sorcery.
When Toby falls for the younger witch he is enmeshed in a web of intrigue, crime and revenge. Behind it all is the battle for control of a vast demonic power. If the girl he loves is to be saved from death, Toby faces not just a struggle to understand the occult but an ancient battle for supremacy that somehow he cannot help believing he has fought before. And unknown to Toby, both sides have picked him to play a leading role in the latest round!