Future Proof #6

"This one-way time-traveling adventure continues as we follow our favorite agents through the dark streets of 1880's London. Hot on the trail of one of the most notorious serial killers in history, James Rison and Simon Magus suddenly find themselves alone in a dark alley with none other than Jack the Ripper. Is this punishment for questioning The Sing? Meanwhile, the mystery of the Umbrella Man slowly begins to unfold as he finds another line of work in Berlin, 1933."