Check back tomorrow. I hear it’s a special occasion…
3×11 The Paradox Engine: The planet Palandor does not remember its dead. When their planet became an innocent victim of the Time War, they struck a desperate bargain, destroying their own past to prolong their future. But as if feeds on Palandor’s past, the same thing that keeps them alive is threatening the whole of space and time. Palandor, the universe, or the Doctor’s own life. To shut down the paradox engine, there must be one more sacrifice.