The answer to the question, "Is this a spin off of the Dr Who episode 'the dr's daughter'" is: YES. Orlaigh plays the Dr's Daughter and Gwithian plays her assistant, Shaun. They go back in time to the Tudor/Elizabethan times when Queen Elizabeth the 1st (Me!) is only a princess and is very spoit - sorta the equivilent of a sulky teenage girl nowadays. . . I pity her lady-in-waiting (Dara). . . There are some slightly slow bits which you just have to watch becuase they are crucial and there is a very long bit where you will probably have to turn the volume up quite a lot to here the VERY IMPORTANT part of the plot!!! Enjoy!