Episode 8.7

The 1976 script for ‘The Seeds of Doom’ clearly says that at this point Alan should be strafing the Krynoid with photon torpedoes from the safety of the Saucer before heading off to the pub, job done. But Alan begins to suspect that a soft-hearted technician may have given the evil sprouty foe, and its hideous youngling, sight of the script before-hand because all is not going to plan. 

How can he make them die?