The Venus conspiracy

When Professor Bacci inadvertently unlocks the biochemical key to falling in love and develops a drug capable of creating emotions indistinguishable from the real thing, he is determined that the world benefits from his discovery.
A private Swiss bank steps in, owned by the secretive Kappel family, and offers to fund Bacci’s drug. What Bacci doesn’t know is the Helmut Kappel has his own plan for abusing the drug’s power; a cynical nightmare of breathtaking arrogance far removed from Bacci’s naive vision.
Only two people can stop Kappel’s dark vision. One is Bacci’s daughter Isabella, a doctor dedicated to saving lives. The other is Kappel’s son and heir, Max, a man raised to feel no emotion and show no pain, a killer apparently incapable of love. But before they confront Kappel they must first confront their feelings for each other.