Ask a question in the box below, or search using the box above.

As you enter your question, our massive, TARDIS-sized computers will search out other similar questions. So be sure to check the list that pops up before asking your question. Once you've decided that your question has not been asked before, push the not-so-threatening blue button below.

If you want to ask questions needing speculation or people's opinions, please do it in our Watercooler forum, not here. The main Q&A space is for questions with definitive factual answers. Thanks!

To avoid spoilers in the main Q&A section, please do to not post information about stories that have not been released in the UK, or ask for information about stories that have not yet aired there.

Jack the Ripper is the best-known name given to an unidentified serial killer who was active in the largely impoverished areas in and around the Whitechapel district of London in 1888. In real life, the killer was never caught and the identity of Jack the Ripper remains unconfirmed, though there are numerous suspects.

In the Whoniverse, Jack the Ripper has been invoked in a number of stories, such as the Fourth Doctor story "The Talons of Weng-Chiang" where the villain was blamed for the murders. In the Eleventh Doctor comic story "Ripper's Curse" (IDW comic story), the killer was revealed to be an alien war criminal Doctor defeated. The Seventh Doctor novel "The Pit" (Virgin New Adventures novel) blamed it on a cult, while a different Seventh Doctor novel, "Matrix" (BBC Past Doctor Adventures novel), indicated the Valeyard was responsible. Several audio dramas have also referenced the killer.

The Eleventh Doctor episode "A Good Man Goes to War" contradicts most of the above by suggesting Madame Vastra not only apprehended Jack the Ripper, but she proceeded to eat him, though whether she really did is at present unknown. The later episode "The Name of the Doctor" has Vastra encountering a serial killer of women who, while never referred to as Jack the Ripper, nonetheless has similarities to the classic depiction of the villain.