Graceless (audio series)

Graceless was an audio series from Big Finish Productions, starring the two Tracers in human form, twin sisters Amy and Zara who previously featured in the Fifth Doctor Key 2 Time Trilogy. The three-part series was released in November 2010, and chronicled the twins' adventures after their departure from the Doctor. Amy's name was changed to Abby (presumably to differentiate her from Amy Pond). The trilogy was directed by Lisa Bowerman. 

Series One

 * 1) The Sphere
 * 2) The Fog
 * 3) The End

Series Two

 * 1) The Line
 * 2) The Flood
 * 3) The Dark