Jack the Ripper walk in London

I have been on the Jack the Ripper guided walk in London a couple of times and can highly recommend it, or one of the many other guided walks on different subjects. A great book which gives a lot of info and background on the walk is a mystery called 'The Whitechapel Secret' which also has a lot of info on London, Paris and Lisbon. Its fiction, but quite informative and a good read!