Emma Watson replacing Scarlett Johansson in period drama

Harry Potter' star Emma Watson is to replace Scarlett Johansson as the lead in the upcoming period drama 'Napoleon and Betsy'.

Watson, Hermione in the Potter films, will play Betsy Balcombe, a young noblewoman trapped on the island of Saint Helena who falls in love with Napoleon Bonaparte during his exile there.
Johansson left the cast recently due to concerns about her plausibility in a role demanding youth and immaturity but still she is one of the film's producers, and shooting is set to begin in the autumn.