Diana Keeling is a woman who faces the world with practised equanimity, acting out the role of wife and mother on her neat estate to perfection. Then one day a cryptic, desperately urgent telephone call from her husband breaks the tenuous bubble of normality and the panic has begun. Like lemmings the victims hurtle to their deaths; the situation is one which today belongs to science-fiction, but a madness, a topple into darkness could bring a situation of panic such as this into reality tomorrow. Christopher Hodder-Williams is an accomplished writer who cleverly blends fact and fantasy into a book which is compulsively readable...and very frightening.