Having watched Gareth Robert's other RTD story recently 'The Unicorn and the Wasp' I realise that both are ridiculously similar. Both feature references to the featured historical writers work ("you can have that"), there is a series of murders and both are comedies.
With a strong cast, great production values and good direction this story does excel but there is nothing special in this story to make it a classic but it is generally a fun romp and the series needs this after the traumatic events of Doomsday for The Doctor.
7/10