From the roots of an ancient witchcraft ... a new terror to destroy.With billions of dollars at stake, every scientist in America is fighting to discover the next Prozac, the latest 'feel good' drug. Edward Armstrong believes he has hit the jackpot. He has isolated a stunningly effective anti-depressant from a bacterial mould first uncovered over two hundred years ago. But there is more to the drug than anyone could have imagined. When Edward turns violent and the corpses of mutilated animals appear near the laboratory, his girlfriend decides to investigate the truth about this new 'miracle' drug. Before it claims any more innocent lives...

Dr. Robin Cook (born May 4, 1940 in New York City, New York) is an American physician and novelist who writes about medicine and topics affecting public health.
He is best known for combining medical writing with the thriller genre. Several of his books have been bestsellers on the "New York Times" Bestseller List. Several of his books have also been featured in Reader's Digest.