This is book 13.5 of the "Stephanie Plum" series.

This note does not contain major spoilers for the book.

These are a side series "between the numbers", a joke on the main series being numbered right in the title I guess.

Insane characters remain the order of the day. A short person (midget) who thinks he's a leprechaun is desperate to save a horse named Doug that he can communicate with telepathically. Cars and apartments are copiously fire-bombed.