Sarah Jane Smith (audio series)

Released in between 2002 and 2006, Big Finish Productions' Sarah Jane Smith series of audio dramas explored the life of Sarah Jane Smith in the years after she was left on Earth by the Doctor. The series took place in the present day. K9 Mark III did not appear in these stories as he has broken down and is in a box in Sarah Jane's attic and is dismantled by Hilda Winters when she finds the box.

The final episode of the series, Dreamland, was released only a few weeks before Sladen returned to Doctor Who as Sarah Jane in School Reunion. This episode led to the commissioning of a new TV spin-off series, The Sarah Jane Adventures, which in turn resulted in the Big Finish audio series terminating.

The TV continuation makes no reference to the events of the audios, but School Reunion reveals that K9 had been non-functional for quite some time as of that story, suggesting a reason for K9 not participating in the audio adventures, as well as Ghost Town being referenced in the Sarah Jane Adventures audiobook The Shadow People.

Publisher's summary
Back on Earth, former travelling companion of the Doctor, intrepid journalist Sarah Jane Smith, fights corruption and crime.

Series One

 * 1) Comeback
 * 2) The Tao Connection
 * 3) Test of Nerve
 * 4) Ghost Town
 * 5) Mirror, Signal, Manoeuvre

Series Two

 * 1) Buried Secrets
 * 2) Snow Blind
 * 3) Fatal Consequences
 * 4) Dreamland

Main cast

 * Sarah Jane Smith - Elisabeth Sladen
 * Josh Townsend - Jeremy James
 * Natalie Redfern - Sadie Miller
 * Ellie Martin - Juliet Warner
 * Will Sullivan - Tom Chadbon