Deptford is a port on the south bank of the Thames, downriver from central London, where Jack the Ripper keeps hostages aboard old prison hulks in 1888. Evie goes there in the memory Prisoners.
A private company bought the hulks and an abandoned garrison in the 1880s. Billingsworth, who serves Jack, guards the hostages Jack uses to keep the wealthy in line. Evie kills him, alerts the police and frees the prisoners.
After Evie leaves, Jack comes back to Deptford to wipe out evidence and witnesses that could expose him or the Assassins.
Deptford's docks held decommissioned warships used as floating prisons, with at least 40 converted over the 18th and 19th centuries.
In Letters of Intent, a hired gun Evie interrogates gives up that Mr. Jack keeps captives on old hulk ships and that Warder Billingsworth runs a private prison for him in the old Deptford garrison. After freeing Weaversbrook's son, she heads downriver.
Loose Ends is followed by The Mother of All Crimes, in which Evie, back from the hulks, joins Abberline at Mary Jane Kelly's murder scene.
Mitre Square
Mitre Square is a key site early in the Jack the Ripper expansion: Jack murders two Assassin initiates posing as Elizabeth Stride and Catherine Eddowes, and Jacob comes to investigate. Later Evie shuts down a fight club near the square.
Spitalfields
Spitalfields is Whitechapel's only Blighter stronghold, Rexford Kaylock's headquarters in the borough. It is the first stronghold most players take, and clearing it also rescues surviving members of the Clinkers gang.
Whitechapel
Whitechapel is the first borough you liberate and the poorest in London, a district of slums and crime. Rexford Kaylock's Blighters hold it when the Fryes arrive in 1868, and in 1888 it becomes Jack the Ripper's hunting ground.