Nate the Great and the Halloween Hunt

It’s Halloween night, and Nate the Great is answering the door for trick-or-treaters when mystery comes a-knocking. Rosamond’s cat, Little Hex, is missing! Little Hex hates Halloween, so maybe he's hiding. Or is he lost?

Nate and his trusty dog Sludge take the case and set off on a hunt for Little Hex. Rosamond walks Nate and Sludge through her travels, and they pass robots, pirates and witches. With a little deductive reasoning and some Halloween luck, can they reunite Rosamond and Little Hex?