Circus of the Dead Chronicles Book Three — Kimberly Loth

After Samuel reveals a secret that is too much for Juliette, she attempts to extract herself from his job and go back to just enjoying her training to be a yoga instructor. But knowing that she could help rid the island of monsters, keeps her returning to Samuel's house anyway. When a body shows up with no signs of a supernatural end, Juliette and Samuel must dig deep to find the monster. And when they do, it might just mean death for Juliette...