I have the basic run concept down... what I'm looking for are some ideas on how to embellish things to really crank up the creep factor.

Basic Concept:
Last year, I put the runners through an astral quest, which you can read here:
In the Wake of the Wicked
In summary, an ancestor shaman and psychologist was summoning up the spirits of his ancestors and interviewing them to find out about their daily lives and develop whether or not personality traits could be passed down through the generations, after generations of indoctrination.
However, one of his more distant relatives was proving difficult, as he had nothing to link him to this ancestor. He hires runners to embark on an astral quest and retrieve an ideal link. Once the quest is said and done, the runners realised that the distant relative was the serial killer, Jack the Ripper. The link they retrieved was the knife Jack used for the murders.
Now, a year later that ancestor shaman has gone missing and the runners are paid to track him down. Upon finding his journal at his home, they learn that Jack managed to free himself from his summoner and possess him. Now he is returning to Whitechapel, UK and resuming his old murderous ways.
They go to a local hospital in Whitechapel, which is now haunted by Jack's former victims (and his newest ones), not too mention the powerful free spirit of Jack the Ripper.
How can I embellish this? Any little spook tricks people are willing to share are appreciated. I have a few in my notes already, but I'm curious to see what the collective minds here can come up with.

Thanks!
SR13