Season 1 — Episode 1
I Need Light
A young woman is found brutally murdered, the hallmark signs of the Ripper upon her. One-time H Division boss, Chief Inspector Frederick Abberline, believes it Jack’s return but Reid (Matthew Macfadyen) – the precinct's new man in charge – suspects a different evil at work.
When Jackson learns that Long Susan's girls have been drawn into the murky world of Victorian pornography, the team must use all of their brawn, brains and brilliance to track down the fiend responsible before another girl is killed.