from the publisher: Professor Augustus S. F. X. Van Dusen, with the help of his friend Hutchison Hatch, solves a variety of mysteries using cold, hard logic. No matter how twisted the trail of clues or how clever the perpetrator, Professor Van Dusen, aptly dubbed “The Thinking Machine,” reminds us that “two and two make four, not some times, but all the time.” So when a woman begs a surgeon to amputate part of her finger or when a pearl necklace disappears from a woman’s neck at a party or when a man presents the court with his “perfect” alibi, The Thinking Machine methodically investigates all of the (logical) possibilities.
That's it. Perfect short stories on Chirp for longish car rides. The "logic" is always there and almost always convoluted. I switch back and forth with classic radio stories when I'm in the car for more than an hour.