Forty-Five (audio anthology)

 was a Big Finish Productions anthological audio release in which the number "45" somehow figured into each of the four stories. It featured the seventh Doctor, Ace and Hex, and was intended to celebrate the forty-fifthth anniversary of Doctor Who.

The stories included were:
 * False Gods by Mark Morris
 * Order of Simplicity by Nick Scovell
 * Casualties of War by Mark Michalowski
 * The Word Lord by Steven Hall

Timeline
This series is set in between BFA: The Dark Husband and BFA: The Magic Mousetrap.