The Natural History of Fear (audio story)

 was the fifty-fourth monthly Doctor Who audio story produced by Big Finish Productions. It featured Paul McGann, India Fisher and Conrad Westmaas.

Publisher's summary
IT IS A CRIMINAL OFFENCE TO COPY OR ATTEMPT TO COPY ANY PERSONALITY OR MEMORY-RELATED ARTICLE SHOWN OR DISPLAYED IN THIS PUBLIC THEATRE, INCLUDING THIS WARNING. PUNISHMENT OR CONVICTION IS AN UNLIMITED REDUCTION OF AUTHORISED OVERTIME HOURS AND TOTAL PERSONALITY REVISION. YOU ARE NOT PERMITTED TO BRING ANY JUKEBOX OR RECORDING EQUIPMENT INTO THIS PUBLIC THEATRE. THIS WILL BE TREATED AS AN ATTEMPT TO BREACH COPYRIGHT. ANY PERSON DOING SO CAN BE EJECTED AND THE EDITOR MAY CONFISCATE SUCH ARTICLES. WE ASK THE PUBLIC TO BE VIGILANT AGAINST ANY SUCH ACTIVITY AND REPORT ANY MATTERS AROUSING SUSPICION TO THEIR LOCAL CONSCIENCE. THANK YOU.

Public Warning

Faction Against Character Theft

Cast

 * Paul McGann - The Doctor / Editor
 * India Fisher - Charley Pollard / Female Prole / Nurse 3 / Conscience 2 / Censor 2
 * Conrad Westmaas - C'rizz / Conscience 1 / The New Editor
 * Geoff Searle - Voice of Light City / DJ
 * Alison Sterling - Sub-conscience / Certification Board Member 2
 * Sean Carlsen - Sub-editor / Certification Board Member 3 / Citizen / Censor 1
 * Wink Taylor - Male Prole / Engineer / Fire Chief
 * Jane Hills - Broadcast Lodge Receptionist / Nurse 2
 * Ben Summers - Nurse 1 / Shipping Clerk / Trooper / Certification Board Member 1

Continuity

 * The Doctor previously referred to the Censor shortly after he and Charley entered the Divergent Universe in AUDIO: Scherzo, though paradoxically he did not know who he was at the time.