Johnny Maxwell and his friends have to do something when they find Mrs Tachyon, the local bag lady, semi conscious in an alley as long as it's not the kiss of life. But there's more to Mrs Tachyon that 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 caught up more and more with then