Spelunking Through Hell by Seanan McGuire

Now in trade paperback, the eleventh book in the fast-paced InCryptid urban fantasy series returns to the mishaps of the Price family, eccentric cryptozoologists who safeguard the world of magical creatures living in secret among humans.

Love, noun:
1. An intense feeling of deep affection; may be romantic, filial or platonic.

Passion, noun:
1. A strong or barely controllable emotion.
2. Enthusiasm, interest, desire.
3. See also “obsession.”

It’s been fifty years since the crossroads caused the disappearance of Thomas Price, and his wife, Alice, has been trying to find him and bring him home ever since, despite the increasing probability that he’s no longer alive for her to find. Now that the crossroads have been destroyed, she’s redoubling her efforts. It’s time to bring him home, dead or alive.
Preferably alive, of course, but she’s tired, and at this point, she’s not that picky. It’s a pan-dimensional crash course in chaos, as Alice tries to find the rabbit hole she’s been missing for all these decades—the one that will take her to the man she loves.
Who are her allies? Who are her enemies? And if she manages to find him, will he even remember her at this point?
It’s a lot for one cryptozoologist to handle.