Gifted and highly respected, Dr Jessie Copeland is about to revolutionise the field of neurosurgery with her ground-breaking bio-engineering invention.

Claude Malloche is suffering from a brain tumour, beyond the treatment of existing medical practice, and only Dr Copeland and her new technique can save him.

But Malloche is the mysterious and ruthless killer holding the Boston hospital where Jessie works, and the city, to ransom. If Jessie fails to cure him, hundreds of innocent people will die...

But if she succeeds, will Malloche only disappear once more to continue his deadly work?