B Is for Bigfoot

This is the first of the Harry Dresden "Bigfoot" stories. Wizard PI Harry Dresden is called to the north woods of Wisconsin to meet with a reclusive client -- a Bigfoot. The Bigfoot's name is Strength of a River in His Shoulders and he hires Harry to protect his half-human, half-Bigfoot son Irwin Pounder.<br> At the time of this story, Irwin is 8 or 9 years old. He's being bullied by two boys who are also part-supernatural. Worse yet, the boys also have a magical protector -- and he has a lot more magical mojo than Harry.

The first "B" in the title is italicized -- B Is for Bigfoot. Not entered that way in ISFDB as it messes up title searches.
According to the series timeline on the author's website, this story takes place between "Ghoul Goblin" and Grave Peril.
The series number relates to this story's position in the "Bigfoot" sub-series. The appropriate series number within "The Dresden Files" parent series would be 2.5