Antonia Bailey
From Tardis Wiki, the free Doctor Who reference
Antonia Bailey, real name Lyria, was the wife of Gregory Bailey, whom the Sixth Doctor found murdered in Manchester on 29 February 2008. They were aliens who lived on Earth disguised as humans. DI Patricia Menzies questioned her about her husband. She was the person paying Maxine. She planned her husband's death, with Sam, who committed the murder. She asked Charlotte Pollard about what happened in the room in which her husband was murdered. She later killed Slater at Sam's request, to make up for having asked him to commit murder. (AUDIO: The Condemned)