We return from a brief hiatus with some listener emails! Then in our brand new “Who Alumni Theater” segment we take a look at David Tennant and Catherine Tate’s stage production of Much Ado About Nothing, Christopher Eccleston in the HBO show The Leftovers, and Karen Gillan in Guardians Of The Galaxy. In the second half we finally get around to discussing time travel. Just what is a fixed point in time and what episode best explores it? Caroline looks at “The Fires Of Pompeii” and Alasdair examines “The Waters Of Mars.”