If you thought last night's Horizon was fascinating, wait until you get a load of this. The Secret Life of the Cat saw 50 felines being tagged and equipped with little cameras, and tonight we get to see what those cameras captured. We'll be following a tomcat who seems to be a bit of Thomas O'Malley (that's alley cat to those who haven't watched the Disney film), a cat with a passion for killing its food, and a rather picky kitty who has found himself a new home. They do say cats have servants...