Alas! Poor Yorinks! I knew him Horatio; a man of infinite jest, and here's another one: this guy, a fruit-seller in a market, finds himself becoming invisible, not metaphorically like in Jeanne Ray's Calling Invisible Women which I positively reviewed (yes I'm positive!) back in November 2016, but for reals.
He slowly starts disappearing, and his cat isn't at all happy with it. Despite visiting the doctor for advice, and pursing other ideas, he can't find a cure until something really rather miraculous happens! I liked the humorous idea, and the way it was written and presented, and I recommend this for a fun read with your kids.