This exciting, graphic and pacy thriller from the pen of Sunday Times bestselling author Michael Palmer is jam-packed with twists and turns and nail-biting tension. Fans of Michael Connelly, Peter James and Robin Cook will not be disappointed.

'Gripping and fresh...wrenchingly scary' -- Publishers Weekly
'Palmer brings his fascinating ER procedural knowledge to a fast-paced narrative.' -- San Francisco Chronicle
'Manages to scare the socks off the reader' -- Toronto Globe and Mail
'Brilliant book.' -- ***** Reader review
'Terrifying plot - keeps you on the edge of your seat.' -- ***** Reader review
'Awesome' -- ***** Reader review
'A real page-turner' -- ***** Reader review
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A RUTHLESS KILLER. A DEADLY DILEMMA.

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?