In his book The Holocaust, he named eminent surgeon Sir Adam Kelno as one of the Jadwiga concentration camp's most sadistic inmates/doctors.
Kelno has denied his involvement in sadistic practices, and asserts he worked hard to save prisoners, at great personal risk.
In the end, Kelno wins his case but is awarded one half-penny, the smallest coin of the realm, because his past actions were found to have been so bad that the minor inaccuracies in the book could not have damaged his reputation further.
The book was loosely based on a libel case involving the author and brought by Polish doctor Wladislaw Dering.
[1][2] A review in TIME magazine called QB VII a "vulgar affront" and a "rather gratuitous endurance test".