Collision Course (audio story)

 was the sixth and final story in the audio anthology The Legacy of Time, produced by Big Finish Productions. It was written by Guy Adams and featured Tom Baker as the Fourth Doctor, Louise Jameson as Leela and Lalla Ward as Romana.

Publisher's summary
Fallout from the temporal distortions has now reached Gallifrey. To find the cause, Leela and Romana remember travels with the Fourth Doctor to the same world, at different times. The enemy is revealed, and it may take more than one Doctor to prevent the destruction of everything!

Cast

 * The Doctor - Tom Baker
 * Leela - Louise Jameson
 * Romana - Lalla Ward
 * Bernice Summerfield - Lisa Bowerman
 * First Doctor
 * Second Doctor
 * Third Doctor - Tim Treloar
 * Fifth Doctor - Peter Davison
 * Sixth Doctor - Colin Baker
 * Seventh Doctor - Sylvester McCoy
 * Eighth Doctor - Paul McGann
 * Tenth Doctor - David Tennant

Continuity
to be added