Denny was diagnosed with autism at three years of age. Autism gave him the gift of obsession. This gift made him the youngest, self-made millionaire in Texas history. Autism also made him vulnerable to the forces of the outside world, of both society and nature. Fortune on the Spectrum is the journey of an unstoppable young man, destined to succeed and challenged to survive. Denny's story takes you through struggle, humor, love, finance and danger from the voice of an atypical mind. Autism Fiction. Texas Novel.