The Caged Assassin

It's very unusual to find a tiger in the TARDIS. But it’s even more unusual to find one heavily dosed in radiation. But this is far from the most unusual occurrence the Doctor, Naomi and Harry are going to encounter today. Because they are about to meet Charles Jamrach, supplier of exotic animals to the rich and royal, who is unaware that his famous menagerie conceals a deadly terror. A strange creature out for blood...