"Smith and Jones" is the first episode of the third series of the British science fiction television series Doctor Who. It was first broadcast on BBC One on 31 March 2007. It sees the debut of Freema Agyeman as medical student Martha Jones. Agyeman had previously appeared as Martha's cousin Adeola in the 2006 episode "Army of Ghosts". The episode sees alien police-for-hire called the Judoon transporting a London hospital to the Moon to hunt down a shapeshifting alien fugitive called "Florence Finnegan" (Anne Reid), who is posing as a human patient inside.