Neil Gaiman — the best-selling author whose work includes comic book series *The Sandman *and the novels Good Omens and American Gods — has denied sexual assault allegations made against him by two women with whom he had relationships with at the time, Tortoise Media reports.

The allegations were made during Tortoise’s four-part podcast Master: the Allegations Against Neil Gaiman, which was released Wednesday. In it, the women allege “rough and degrading sex” with the author, which the women claim was not always consensual.

One of the women, a 23-year-old named Scarlett, worked as a nanny to his child.