The Master steps back in shock, letting go of Andrew - one of the Andrews. The Doctor is paralysed, but Ambrose takes his chance, running forward and tackling the Master, the knife clattering to the floor.

For a moment it looks like there's only one James rolling on the floor, but then they split apart. For a moment it was like they were both half-solid, flickering, partly phasing through one another, but still knocking against each other.