British actor Colin Firth has signed on to star opposite Ben Barnes in Oliver Parker’s “Dorian Gray,” an adaptation of Oscar Wilde’s classic novel “The Picture of Dorian Gray,” according to The Hollywood Reporter.

Barnes will play Dorian Gray, a young man who becomes the subject of a painting. As the man embarks on his quest for pleasure, the painting begins to change and age.

Firth is set to play Lord Henry Wotton, a ruthless aristocrat who corrupts Gray with his worldview.

Firth is currently onscreen in Universal’s “Mamma Mia!” He will next be seen alongside Uma Thurman in Griffin Dunne’s comedy “The Accidental Husband.”

Barnes is known best for his role as Prince Caspian in “The Chronicles of Narnia: Prince Caspian.” He also recently wrapped Stephan Elliott’s British comedy “Easy Virtue,” in which he stars opposite Jessica Biel and, coincidentally, Colin Firth.