When pharmaceutical prospector Nathan is found dead in the Amazon after uncovering a revolutionary new drug, his widow, Cassie, is stunned to receive an invitation to the lavish launch of Panacea Pharma's new Peruvian research institute. Accepting means confronting danger - but refusing could bury the truth about her husband's death forever.

There, surrounded by ruthless colleagues battling over the billions at stake, Cassie finds herself caught in a web of greed and ambition as impenetrable and deadly as the rainforest itself.

Undeterred, she begins to unearth the truth - until another member of the team dies and Cassie is forced to retreat to the safety of home. But peril and the laws of the jungle follow her: hunted by a killer with secrets to keep, Cassie realises the cost of discovering the truth about her husband's death might be her own life.