Making A Murderer, I Am A Killer and Crime Scene: The Vanishing At The Cecil Hotel? Fear not: Netflixâs latest offering will fill the true crime-shaped hole in your life. Out now, This Is A Robbery: The Worldâs Biggest Art Heist is four hoursâ worth of twists, turns, leads, dead-ends, mobsters, Manets and big, big money. This is everything you need to know. What is it about? This Is A Robbery delves into the 1990 Isabella Stewart Gardner Museum heist, during which two thieves dressed as Boston police officers stole art worth millions from the museum. We learn that the robbers bound and gagged two security guards, before proceeding to loot the museum over an 81-minute period. The four-part true crime series takes its name from something one of the thieves reportedly said before taking the guards down to the basement, where they were discovered (by actual police officers) the next morning. The crime remains unsolved.