It"s May 21 1941, thought Johnny. It"s war. 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 live. But there"s more to Mrs 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 1041. Suddenly now isn"t the safe place Johnny once thought it was as he finds himself caught up more and more with then . . .