Fathers and Brothers was a screenplay by John Leekley for a pilot to the Amblin Television series based off of the Leekley Bible. While sharing the same general beats of the opening story proposed in The Chronicles of Doctor Who?, this script added several new elements, including a 1940s human companion named Lizzie. Another notable shift from the Bible was that rather than being a continuation of the original series, Fathers and Brothers functioned as an origin story for the Doctor. (The Nth Doctor)
Depiction of Fathers and Brothers from DWMSE 5.