This English Killer Kid movie is basically another take on 'The Bad Seed'. Kate and Alan Marlow befriend a pregnant woman who wanders into their meadow during a family picnic. By morning the stranger has disappeared, leaving behind her newborn daughter Bonnie who is only a few months younger than the Marlow's own infant son. Then, the son mysteriously dies and the deaths continue when their older sons die in bizarre accidents. Eventually the father catches on and attempts to save the life of his remaining daughter-but Bonnie has other, more fatalistic plans.