Dr. Thomas Dent Mütter was an audacious medical innovator who pioneered the use of ether as anesthesia, the sterilization of surgical tools, and a compassion-based vision for helping the severely deformed, which clashed spectacularly with the sentiments of his time in the mid 19th century. Cristin O’Keefe Aptowicz, author of Dr. Mütter’s Marvels, interweaves an eye-opening portrait of nineteenth-century medicine with the riveting biography of a man once described as the "P. T. Barnum of the surgery room."