The X Factor goes global, as the 24 remaining acts jet off around the world to the judges' houses. Simon is at his home in Los Angeles, while Cheryl is in Marrakech, Louis is in Italy and Dannii is in Dubai. The judges are joined by Kylie Minogue, Will Young, Ronan Keating and Sinitta, who will be helping them make the tough decisions needed to whittle down the contestants to the final 12. Host Dermot O'Leary is on hand to support the singers as they face their biggest performance so far.