The hangman's revolution - 2

F.B.I. AGENT CHEVIE SAVANO IS TRAPPED IN A NIGHTMARE FUTURE.
Unless she can return to 19th-century London and change the course of history, millions will die.
Luckily she has Riley the boy magician and a Victorian gangster with lovely hair to help her battle two crazed villains, who have brought the military technology of the future back in time - with potentially disastrous consequences.
The stakes are higher than the hangman's noose and only Chevie can save the day. Assuming she can avoid being killed by a couple of psycho warrior-nuns first . . .