Gitta Kardos is a 40-year-old single businesswoman who lives for her work. As a perfumer, she designs personalised fragrances. But that's just the surface. Her work is much more complex, using her refined sense of smell to detect scents that no one else can. With the right concentration of scents, she can influence the behaviour of others without their awareness.

She can put one party at an advantage in business negotiations.

It can infer the current state of an athlete's body odour and thus determine his chances of winning for a bookmaker.

She can tell whether a negotiating partner is scared, aroused or sexually motivated.

And she can do all this by her smelling.

Gitta Kardos is brought together with a new client in Budapest, whose order she fulfils without a second thought, putting her and the business she founded with her partners in danger. Before she knows it, she is being hunted by the police as a suspect of multiple murders, and if that wasn't enough, she is being pursued by several assassins.

Can she prove his innocence in the murders? Can she outwit his pursuers? Will she find out who wanted her dead?

And how can she use his wonderfully sensitive sense of smell to do it?