Allen Drury

It's the most unusual medical unit in the galaxy — and it makes house calls. A fully equipped starship lab, Taylor's Ark is run by Dr. Shona Taylor, a specialist in environmental medicine. She has a menagerie of very special assistants, including an Abyssinian cat, a dog, rabbits, mice, and an alien ottle named Chirwl. Now, this highly trained crew faces the ultimate medical mystery. On Chirwl's home world, humans and ottles alike are aging at an...