Kellie O'Rourke needs answers. Who was her father and where did her half-sister Alice come from? At the death of their mother, she discovers letters which could explain everything. But then they came. Out of her depth, Alice is in trouble and when the thugs come for her, they meet Kellie instead. And now, Kellie's life has spun out of control.Eighteen months later, MI5 analyst Eva Merriman is part of a team investigating a string of deaths across the country. The toxins involved have raised the threat level enough to involve the security services.Meanwhile, a sinister organisation continues its testing program of death. Their deadly plans and choice of target will change the world. So close to discovering the perfect killing solution, they will stop at nothing.After the death of a scientist they had coerced, can Kellie, and unbeknown to her, Eva, stop an evil madman and his organisation, before it is too late?