Solon's Brain
From Tardis Wiki, the free Doctor Who reference
Solon's Brain was a novel written by Sarah Jane Smith as part of her Doctor series. It was published in 2000 by Virgin Publishing. It was based on Sarah's adventure with the Fourth Doctor on Karn involving the Sisterhood of Karn, Morbius, and Mehendri Solon. (PROSE: Moving On, TV: The Brain of Morbius)