 The book was titled "I Was a Doctor in Auschwitz" and included Perl's description of operations on young women's breasts without anesthetics, using a knife as her only instrument.She described Irma Grese, a 19 year old "Aufseherin" or warden from Auschwitz who observed the procedures and derived pleasure from their suffering.She wrote that Grese's “face [was] clear and angelic and her blue eyes the gayest, the most innocent eyes one can imagine.” Her words helped paint a picture of Grese when the notorious guard was put on trial and subsequently executed.