"Franny K. Stein: Mad Scientist" is a children's book written by Jim Benton. It follows the adventures of Franny K. Stein, a young girl who is also a mad scientist. Franny is quirky and creative, often conducting experiments that lead to humorous and unexpected results. In her quest for scientific discovery, Franny faces challenges and learns valuable lessons about friendship and self-acceptance. The book combines elements of science fiction and comedy, making it an engaging read for young audiences. It is part of a series that highlights Franny's unique personality and her imaginative inventions.