― Unless you want to be confronted by a group of ninjas, you don’t want to break the code of conduct at London’s Prince Charles Cinema. They won’t run a katana through you or use throwing stars, but they will pop out of nowhere and give you a stern warning. ∙ Invisible Cinema Ninjas, now there’s a cool concept! Well, they’re not really ninjas trained in the deadly arts, but really just volunteers dressed in all-black Lycra suits called “Morphsuits”. They’re offered free tickets by the [...].