A review by nwhyte
Doctor Who: Illegal Alien by Robert Perry, Mike Tucker

4.0

http://nwhyte.livejournal.com/2635668.html

A Seventh Doctor novel published in 1997, featuring Ace and Cybermen in wartime 1940s London; grittily imagined, with good characterisation; one of the better Past Doctor Adventures that I have read. It shares certain resonances with The Doctor Dances / The Empty Child, but is really very true to the spirit of McCoy era Who, to the point that I wondered if it could have been a script in its own right.

As indeed, apparently, it was - submitted for the 1990 season that was never made.