Author: Terry Pratchett

Publisher: Corgi Books 1997

Pages: 237

Description:

Johnny Maxwell and his friends have to do something when they find Mr's Tachyon, the local bag lady, semi conscious in an alley. As long as its no the kiss of life.

But there's more to Mr's Tachyon than a squeaky trolley and a bunch of dubious black bags. Somehow, she holds the key to different times, different eras including the Blackbury Blitz in 1941. Suddenly now isn't the safe place Johnny once thought it was as he finds himself bound up more and more with them.