'A truly absorbing novel... legitimately frightening... unusually compelling' Kevin Brockmeier, author of The Brief History of the Dead 'Taut and timely' Alex Scarrow, author of the DCI Boyd thrillers 'A protagonist you want to root for... a fast-paced mystery Guy Morpuss, author of Five Minds ________________ DI Lucy Stone's life was changed forever when terrorists deployed a lethal nerve gas at Waterloo Station, killing 10% of London's population. Lucy should have died - but she didn't. When London's most important scientist is brutally murdered, Lucy discovers he may have been working on an antidote to the chemical weapon. But time is running out. Will Lucy find the antidote - and catch the killer - before it's too late? ________________ '[A] whirlwind of a read... Terrifyingly imagined... Read if you dare' Amy Lilwall, author of The Biggerers 'Gripping, evocative and will keep you guessing' Press Association 'Genuinely exciting, page-turning and frighteningly credible' Business Post