In 1989 de Marco was commissioned by Bédé Adult to illustrate an explicitly erotic series scripted by the prolific journalist and historian of comics Henri Filippini. Not that the three Doctor Sex volumes needed much script.

The first volume opens in the clinic of Doctor Kurt von Kramer, rumoured to have been a notorious Nazi doctor during the war, and who now claims to cure women’s frigidity and mens’ lack of desire by means of an extreme regime of stimulation and extreme sexual practice. A rich businessman has brought his wife Jessica for ‘treatment’, and the rest is fairly predictable. Jessica meets some of the other inmates, and by the end of her course of treatment is suffering more from insatiable desire than lack of libido.

The truth is that any issues were probably a result of her husband’s lack of interest, and the solution is a bit of variety and excitement.