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 to your right.
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.
Just like the Doctor we can not determine the age of the Master. The Master has never been forthcoming about his personal life and we haven't seen his perspective long enough for him to even mention his age. We can assume that he was relatively the same age as the Doctor but it's impossible to know old this is.