In the West End of 1950s London, plans for a movie version of a smash-hit play come to an abrupt halt after a pivotal member of the crew is murdered. When world-weary Inspector Stoppard and eager rookie Constable Stalker take on the case, the two find themselves thrown into a puzzling whodunit within the glamorously sordid theater underground, investigating the mysterious homicide at their own peril.

In London, after investigating crack addicted junkies for an article in her newspaper, Amy Klein watches a bizarre videotape where an underground group of youngsters in Bucharest apparently becoming zombies. Amy finds Marla dead with a puzzle cube in her hands. She brings the object to her hotel room, and opens it, beginning her journey to hell.

In April 2015, the Hatton Garden Safe Deposit Company, an underground safe deposit facility in London’s Hatton Garden area, was burgled by 4 elderly men. With the stolen property having a value of up to £200 million, the incident has been called the “largest burglary in English history”.