Take a touch of humour, add some genetic science and nanotechnology. Steep with conspiracy and stir in murder and despair. Season with romance between three people in a secret location. Garnish with morality.The result is 'A Vested Interest', a novel series by John and Shelia ChapmanBook 1When Donna Rigden gets fed up with her job at D'Netics Research Facility she resigns. Big mistake! Donna is now on the hit list of one of the most notorious men in the corporate US. He has no morals and doesn't accept the word no.Sir Richard Triplet, Donna's new employer showers her with luxury and makes her an offer she can't refuse. Now, once she's signed the contract, he asks her to use her medical expertise to commit murder. Donna probably would have walked away, but she'd been swept off her feet.Richard sides against her; Donna feels hurt and betrayed. She turns to her best friend for help. Donna's life is turned upside down. She must make a life changing choice. Once made, there's no going back. Was it the right choice?When death strikes, the infirmary's doctor is ordered to give his patient a mystery drug. He's told the drug is either a cure or a curse. Will he stand by his Hippocratic Oath or follow orders?