With the recent release of The Sandman, the long-awaited television adaptation of Neil Gaiman's beloved graphic novel, fans of the sci-fi and fantasy writer are thrilled to see one of their favorite stories come to life. The past few years have seen Gaiman finding massive success in bring his stories to TV, with Starz' adaptation of American Gods and the wildly popular miniseries Good Omens. However, neither of these shows marked Gaiman's first foray into television. In fact, before these adaptations of his written works blew up, he penned an original tale for the small screen as a chapter in one of the biggest franchises in British pop culture: Doctor Who.