We are going through all of the stories of Doctor #4 and #10. Tom Baker is the Doctor for 2 episodes. Tonight's Story is The Android Invasion episodes 3 and 4 with companion Sarah Jane Smith. (DVD)
David Tennant (Doctor #10) is the Doctor in The Girl in the Fireplace directly after the two episodes of Doctor #4.
The Sarah Jane Smith story The Nightmare Man will start off the evening.