L'auteur de Sandman Slim est en interview en anglais ici... 

Il en parle justement : 

For the benefit of those not familiar with your Sandman Slim series, can you tell us a bit about it? 

It’s about James Stark, a magician (in the sense that he can perform real magic) unjustly sent to Hell. The first book in the series is about Stark’s escape from Hell and his search for revenge on the people who killed his girlfriend and sent him to Hell in the first place. There’s a lot of action and a lot of questions about the nature of God, the Devil, and reality in general. Plus it’s funny. 

In your world you use a lot of occult and biblical symbolism. Is this something you’ve always been interested in? 

I left the church when I was a teenager, but I’ve always been interested in the magical and religious systems that control so much of our belief and behavior. Sandman Slim is a perfect vehicle to explore those ideas.