I like the idea of these multi-media events for Doctor Who but Dooms Day has not caught my fancy. I do not like the title character or the premise of the series. An assassin does not seem to be the kind of character that fits into the Doctor’s milieu as a protagonist. The story follows Doom on her quest to catch up with the Doctor she first met but encounters the Ninth Doctor instead. The Second Doctor makes a brief appearance towards the end of the book. The four “hours” of the book all center around the same planet with an imminent collision with an asteroid impending. The story is well written and fast paced with a strong throughline. As a stand alone novel I would give it a 7 out of 10. However as a piece of a long narrative I feel the stories did not advance the plot substantially.