A solicitor is summoned to attend a funeral, where he spots a young woman in black whose appearance is unsettling—a ghostly presence locals refuse to discuss. But let's call a spade a spade: declaring a play to be "the most terrifying live theater experience in the world" is pretty bold. I mean, it's still just people on stage, right? Are they going to drop some heavy psychadelics into my coffee on the way in, so as to obscure my grasp on reality? In truth, the audacious claim makes me all the more interested to see this thing; a staple of London's West End for 24 years that's responsible for sending chills down seven million spines.