DiCaprio will play a charismatic doctor turned serial killer who murdered as many as 200 people. Investigation Discovery will dive deep into the serial killer known as Son of Sam in a new threepart documentary series, the cable network announced Tuesday. And Also The Trees Rar. Learn more about Chicago serial killer H. H. Holmes and his notorious Murder Castle, at Biography. Devil White City Serial Killer' title='Devil White City Serial Killer' />Tests confirm gravesite of 1. Chicago Worlds Fair serial killer H. H. Holmes. PHILADELPHIA Tests show that the remains in a suburban Philadelphia grave are indeed those of a 1. A judge approved the exhumation of Dr. H. H. Holmes grave earlier this year. Descendants requested it for a series called American Ripper on the History Channel. Part of the show looked at whether Holmes escaped, and scientists findings were revealed in this weeks final episode. Holmes, the pseudonym of New Hampshire born physician Herman Webster Mudgett, is believed to have killed an undetermined number of people at his hotel of horrors during the 1. Chicago Worlds Fair. Even though hes been busy on another passion project, Martin Scorsese confirms that hes still working on The Devil in the White City movie. It featured a bizarre labyrinth of windowless rooms, secret passageways, false floors, trapdoors and a vault. Most of the rooms had gas vents that were controlled from Mudgetts bedroom. Many of the rooms were soundproof and could only be locked from the outside. But it was the murder of his business partner in Philadelphia that led to his conviction and hanging in 1. Holmes had left specific instructions for his burial. He was to be laid in a pine box and the box was then filled with cement, buried 1. University of Pennsylvania anthropologist Samantha Cox, who did the forensic science on the exhumed remains, tells the News. Works online site that because of his unique burial requests, Holmes body had not properly decomposed. She said his clothes were almost perfectly preserved and his moustache was intact on his skull. But the corpse had decayed. It stank, Cox told the news site. Once it gets to that point we cant do anything with it. We cant test it, cant get any DNA out of it. Holmes teeth were used to identify him, she said. WCAU TV reports the remains were re interred at Holy Cross Cemetery in Yeadon. Holmes was the subject of the 2. The Devil in the White City, by Erik Larson.