The other characters in the book are fleshed out as well. Dale is introduced merely as the target of some bullies, but becomes more than the reader can imagine. Joanna is unflinchingly wicked. Ryan has a change of heart, and Natalie is not the perfect child that she seems. The parents are busy, but truly care about Bridget and want her to be happy.
This is not lacking in the elements that make a great spy novel, either. We have Spool, the Charlie's Angel type talking head, who supplies Bridget with the aforementioned lip balm as well as Tic Tac cameras and a laser that can cut a Mercedes in two. There are divided loyalties, unexpected allegiances, and awesome chase scenes. Personally, I just want the track suit programmed to replicate all of her father's physical skills, especially since wearing it even makes her faster without it!
For fans of Gibb's Spy School, Rylander's Code Name Zero or Sanderson's Alcatraz Versus the Evil Librarians, Bridget Wilder: Spy in Training will go over as well as a poshly wrapped birthday package on the porch of someone who thinks everyone has forgotten her birthday!