He delighted in playing with housemate and viewer minds when he returned to Australian screens after a four- year- absence last year and proceeded to help turn around the ratings fortunes of Channel Nine. Now Big Brother and host Sonia Kruger are back, with a swag of new housemates, a “twist” that’s been long on promotion and short on detail, and a new house. As part of his plan for world domination, Big Brother has added a Saturday night games show to his Monday to Friday format. Tonight, the housemates go in. Or do they?