Isleworth Mona Lisa
According to Leonardo's early biographer Giorgio Vasari, Leonardo had started to paint "Mona Lisa" in 1503, but "left it unfinished". However, a fully finished painting of a "certain Florentine lady" surfaced again in 1517, shortly before Leonardo's death and in his private possession. The latter painting almost certainly is the one that now hangs in the Louvre. Based on this contradiction, supporters of the authenticity of the "Isleworth Mona Lisa" claim it is the unfinished "Mona Lisa", made at least partially by Leonardo, and the Louvre "Mona Lisa" a later version of it, made by Leonardo for his own use.
Mona Lisa's Revenge
The Mona Lisa tries to unleash a beast in the gallery basement, which she refers to as her brother. This creature is locked up in a vault and can only be released by using a puzzle box key. This key is destroyed by Harding who, despite his admiration for La Gioconda, cannot allow her to unleash the beast on the world. Luke, Clyde, and Rani have to try to solve the problem without Sarah Jane as she is now trapped in a painting. The Dark Rider captures Clyde and takes him to the vaults along with the Mona Lisa and Harding. As Mr Harding has destroyed the original key, Clyde is encouraged to draw another, that the Mona Lisa can bring to life as a replacement. This is done and the key is used, but before the beast can escape, a picture of K-9 drawn by Clyde also comes to life and fires at the beast, causing it to retreat into the vault. This sets off a chain reaction causing all the painting people to revert to being just works of art, and all those trapped in paintings to be released. The story ends with the Mona Lisa restored to her frame and Luke promising to tidy his room.Pearson Education published a simplified novelisation of this episode by Trevor Baxendale under the title "Painting Peril" for school literacy programs in September 2010.