Fuzzy Logic, is a new book in H. Beam Piper's Fuzzy series. It is Wolfgang's fourth and biggest Fuzzy novel, following The Fuzzy Conundrum, Caveat Fuzzy and Fuzzy Ego Sum.

It is March 15th, 658 Atomic Era on the planet Zarathustra and things have quieted down a bit since the destruction of the Fuzzy slaver ring. Or have they? A group of people on Beta continent have been in hiding for several months with a very nasty secret.

From off-world, two groups of people have arrived to vex the local government and Fuzzy Commissioner of Native Affairs, Jack Holloway. Supervisor Kim Trahn Sylvinski and his crew from Terra have come to audit Zarathustra's shiny new government. Supervisor Sylvinski is eager to take someone's head on a platter back to Terra, and Ben Rainsford, the Colonial Governor, appears to be the main focus of this unwanted attention. Even worse, an interested third party, a Hugh Lennon from Magni Colony, comes up with information that could cause more trouble for the beleaguered Colonial Government.

The second group could be even more sinister with motives and means well outside of the norm. What they are after is a mystery that could threaten the stability of the entire Federation. Things start getting hairy when suicide bombers make the scene with a strange message before blowing themselves up.

A young Magni-Freyan woman finds herself first lost in the wilds of eastern Beta Continent, and then finds herself in even deeper trouble than just dealing with a charging damnthing or attacking harpies. In the company of people with questionable motives, she plays a waiting game until she can escape to safety.

Meanwhile, Morgan Holloway returns from Terra with a sealed chest containing something that could bring down the Charterless Zarathustra Company and, by extension, the Colonial Government as well. To assist him he hires, Jason Roberts, private investigator and his assistant, Fuzzy Mike Hammer. They compare notes only to find themselves in potentially mortal danger.