The Black Lion (The Godhunter #30)

Kirill wants to take his family on vacation. He wants to show his daughter the land his father, Peter the Great, conquered and the small village where his mother was born. Vervain wants that for him too but as their vacation progresses, strange things start happening. People resembling Vervain's friends - her god friends - begin to appear in odd places and humans are drowning in pairs. As Kirill and Vervain investigate, their answers only lead to more questions but one thing is certain; the Godhunter doesn't get to go on holiday.