This week Strictly comes from the world famous Blackpool Tower ballroom. Each of the nine remaining couples step onto the historic dance floor to perform either a ballroom or Latin dance. Waiting to be impressed are judges Len Goodman, Alesha Dixon, Craig Revel Horwood and Bruno Tonioli. At the end of the evening, the two couples with the lowest combined judges' scores and viewer votes face the dance-off. Who will be saved by the judges and who will be performing their last dance? Whilst the celebrities nervously wait to find out their fate, the professional dancers treat us to a stunning Viennese waltz, and music is provided by the legendary Rod Stewart.