During the fight and arrest scene, Drake is shown in closeup as watching with great interest but in the long shots he is facing away from the scene.
During the reenactment scene there is ash between Bogg's thumb and forefinger on Nellie's coat but after the cut away Nellie's sleeve is completely clean save the original burn mark.
During the reenactment scene there is ash between Bogg's thumb and forefinger in Nellie's coat but after the cut away Nellie's sleeve is completely clean save the original burn mark.
Although Arthur Conan Doyle is depicted as having an English accent, he was in fact Scottish.
Nellie Bly claims that Jack the Ripper killed six women. In reality, he killed five women between 31 August and 9 November 1888: Mary Ann Nichols, Annie Chapman, Elizabeth Stride, Catherine Eddowes and Mary Jane Kelly.
In the Cock & Crown pub, there is a poster on the wall advertising "Lord Kitchener's Appeal", a program to recruit soldiers during World War I (1914). This story takes place 25 years earlier, on November 19, 1889.
Near the climax of the story, Bogg escapes from the police wagon, which has stopped because Jeffrey has started screaming as a ruse. A street sign to the left of the police carriage says, "Marlyebone Road". Today it is a major road, as well as a neighborhood and an underground station, and is properly spelt, "Marylebone".