Kit Harington is heading back to HBO, this time as one of the wizarding world’s most vain frauds. The Game of Thrones star has been cast as Gilderoy Lockhart in the second season of HBO’s Harry Potter series, replacing Nicholas Hoult, who has left the production because of scheduling conflicts.

Emilia Clarke is known as the 'Dragon Lady' when she goes into her local shop here to buy groceries because of her "Game of Thrones" character.

Season five debuts on Time Warner Inc's HBO on April 12