The Endcard is a hint from Tom.<br>It clearly is burried somewhere beneath the South Block!<br><br>Thank you Tom, I will mention you on my trial!,(reply>), @Dave Land Perhaps not - clearly, one of the bookshelves inside there must be on a swivel. And you'd have to close exactly one of them to access some kind of staircase.,(reply>), My research indicates that “Senate House South Block” is an anagram for "Sleuth shut one bookcase," which is utterly unhelpful.,(reply>), you are unequivocally accurate,(reply>), @mchanna there might be some artistic licence there....a smidgin perhaps...or maybe a big dollop,(reply>), @slicedpage are you sure about that?