Lucas Seyton, also known as the Fallen Angel, was a gentleman thief in 1930s London. In 1933, Seyton saved the Second Doctor from androids which were pursuing him. After learning that the Doctor's friends Jamie and Zoe were trapped in a house with other killer androids, Seyton and his friend Paul Kettering helped the Doctor rescue them. Seyton's memories of these events were erased by the Time Lords. (PROSE: Fallen Angel)