The novella “Code of the Krillitanes” by Justin Richards was published for the first time in 2010.

The Tenth Doctor arrives in London in 2010. He quickly realizes that something strange is happening when he runs into some kids who seem normal, so much that they’re playing football, but show scientific knowledge out of the ordinary even for an adult human.

The boys explain to the Doctor that a new product called Brainy Crisps increases the intelligence of those who eat it. Suspicious, the Doctor goes to buy some for analysis. His tests show that the chips contain Krillitane oil: evidently it’s a new plan of the aliens but for what purpose?