Ong’s Hat is rumoured to have once been the site of a gateway to another dimension. After meeting on a forum devoted to the urban legend, yoga instructor Sarah Larsen, and schoolteacher Charlie Brill, go on a road trip to the New Jersey Pine Barrens where a group of renegade Princeton professors had once conducted quantum physics and chaos theory experiments to discover a new theory for dimensional travel. When Sarah disappears, Charlie finds himself at the center of a mystery. Corey Brill (The Walking Dead) stars in this docu-thriller for Radio 4 and BBC Sounds from the makers of The Polybius Conspiracy and Passenger List.