A metro line is a great equalizer. It breaks down barriers between poor and affluent neighborhoods by allowing the easy movement of all citizens. The Whitechapel metro station was opened in 1876 and connected that beleaguered area to the City of London. For the detectives of Ripper Street, the construction of the new metro line is the scene of a double murder. The only witness is in a state of shock and cannot help them. Thus, Inspector Reid, Drake, and Captain Jackson have to rely instead upon their powers of deduction.