Also, work is well underway on the fourth book in the series which is promising to end up novel length instead of adhering to the shorter format of the first three books. The Legend of Harry House is intended to be a proper haunted house mystery. The book opens with visions of a grisly murder and hits the ground running from there as our heroes prepare for seventh grade.
Presently, the word count is just shy of 16,000, not much shorter than the entirety of Book One of the series, and I've barely scratched the surface. In fact, everything so far has taken place during the summer break, with travels and camps splitting the Psi Squad apart. I'm looking forward to the start of the next school term!