In this trailer of Inside Job, the movie that everybody should see, there is a clip of the therapist I mentioned, which was part of the inspiration for MISTRESSS ILSA.
His name is Jonathan Alpert and he says: "These people are risk-takers, they're impulsive, I see a lot of cocaine use, prositution..."
Although technically a dominatrix is not classified as a prostitute...
Interesting interview with the director/producer of Inside Job in the Huffington Post.
