London 2027.

Terrorists deploy London Black, a highly sophisticated nerve gas, at Waterloo Station. For ten percent of the population – the ‘Vulnerables’ – exposure means near-certain death. Only a lucky few survive.

London 2029.

Copy-cat strikes plague the city, its Vulnerable inhabitants kept safe by regular Boost injections. As the anniversary of the first attacks draws near, DI Lucy Stone, a guilt-ridden Vulnerable herself, is called to investigate the gruesome murder of a scientist. Her investigation soon unearths the possibility that he was working on an antidote – one that Lucy desperately needs, as her Boosts become less and less effective.

But is the antidote real? And can Lucy solve the case before her Boosts stop working?