Explaining Doctor Who Badly - Season Fifteen 

Nice prop hanging on the wall in the background from Mandragora's Masque there... hold on, have I got that right??

Oh god, that infinite loop in The Invasion of Time

How about the New Beginnings Trilogy. 8 people live\work in the Traken castle: the Denis Carey Keeper, Tremas, Kassia, Seron, Luvic, Katura, Neman, and Nyssa. At the end everyone on Traken, Logopolis, and Castrovalva is dead, and not only that, but everyone on a good 40% of the universe. Except Nyssa who only survived because she was teleported off as part of the Doctor's regeneration.

ok gotcha. a scantily clad triple crossing sontaran seaweed. mk2. with no contact lenses.

But not normal seaweed GLOWY GREEN SEAWEED OF AN UNNATURAL PERFECT GREEN LIKE IF IT WAS MADE WITH MS PAINT