Acsquidentally in Love by K.L. Hiers

Nothing brings two men—or one man and an ancient god—together like revenge.

Private investigator Sloane sacrificed his career in law enforcement in pursuit of his parents’ murderer. Like them, he is a follower of long-forgotten gods, practicing their magic and offering them his prayers… not that he’s ever gotten a response.

Until now.

Azaethoth the Lesser might be the patron of thieves and tricksters, but he takes care of his followers. He’s come to earth to avenge the killing of one of his favorites, and maybe charm the pants off the cute detective Fate has placed in his path. If he has his way, they’ll do much more than bring a killer to justice. In fact, he’s sure he’s found the man he’ll spend his immortal life with.

Sloane’s resolve is crumbling under Azaethoth’s surprising sweetness, and the tentacles he sometimes glimpses escaping the god’s mortal form set his imagination alight. But their investigation gets stranger and deadlier with every turn. To survive, they’ll need a little faith… and a lot of mystical firepower.