"Welcome to my little Hellfire club," he tells the young innocent Dorian as he leads him into a drinking den and brothel.
As women cavort with the customers on tables and in corners, Dorian receives a saucy proposition from one of the ladies.
"There is no shame in pleasure," says Henry, played by Mamma Mia! star Colin.
"Man wants to be happy but society wants him to be good. When he is good he is rarely happy but when he is happy he is always good."
Gray area ... Ben in the movie
Narnia star Ben plays a young man led into a debauched lifestyle in the Victorian drama based on Oscar Wilde's classic novel.
But, while others age, his drinking and wild living has no effect on his youthful looks.
Dorian Gray, which also stars EMILIA FOX and BEN CHAPLIN, is released on Wednesday September 9.
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