Invisible Enemy and K9 on DVD

Further information about the DVD extras of the forthcoming release of The Brain of Morbius has today been revealed on the BBFC website. Along with a documentary, "Getting a Head", and features such as "Designs on Karn", "A Letter to Robert Holmes" and "Set Tour", the disc contains a trailer for the forthcoming releases of 1977's The Invisible Enemy - which saw the first appearance of the robot dog K9 in Doctor Who - and the 1981 spin-off K9 and Company, which stars Elisabeth Sladen as Sarah Jane Smith.

It is not yet clear whether or not this joint trailer indicates that the two stories will be released together in a double pack.