Gabriel Ebert, who won a Tony for his music-hall turn as Mr. Wormwood in 'Matilda,' brings the same goofy sensibility to Camille Raquin...But even for such a bona-fide fool as Camille...the characterization is much too light-hearted (and empty-headed) for this Grand Guignol tale of murderous lust and obsession...Knightley is infected with the same stupid-bug...she slouches around her mother-in-law's bourgeois flat looking petulant and behaving rudely in front of visitors...Knightley hangs onto Therese's girlish demeanor until Laurent puts her out of her misery by seducing her -- at which point, Knightley comes alive and delivers Zola's lushly romantic sentiments with the exuberant joy of a woman famished for love and ripe for a lusty affair...Getting rid of the buffoonish Camille brings out the best in everyone...Knightley and Ryan are ravishing -- and articulate -- as these fierce bourgeois Macbeths, undone by their own greed and passion.