Its relief to transport Lucie and The Doctor to a more regal, stately setting which sits in sharp contrast to the first two stories. It is the strongest installment of the series so far - a proper sci-fi concept developed into a twisty, clever plot. The reincarnation machine concept gives the actors a fun and dynamic way of playing multiple characters. It leaves room for a few surprises and plenty of subterfuge. Its certainly the first installment that had me gasp with surprise!