Immersive theatre company Punchdrunk have acquired an enthusiastic following, so their return to London after an absence of some years was big news. The Drowned Man: A Hollywood Fable was my first experience of them, and it was meant to come some time ago but the preview performance I'd booked for back in June got cancelled due to technical problems. On the plus side this meant I could transfer my ticket to a date further into the run when the company had settled into the complex performance - a real bonus, apparently, as disgruntled voices from the show's previews suggest it took a long time to find its feet. But now that it has it's certainly something hard to forget, a promenade piece that's taken over a huge building near Paddington Station and transformed it into a 1950s Hollywood movie studio and its surroundings.