In the fog-shrouded streets of Victorian London, a series of brutal incidents leads the respectable lawyer Mr. Utterson down a path of mounting horror. The crimes are traced to the sinister and deformed Mr. Hyde, a man who inspires instinctive revulsion in all who meet him. But what possible connection can this violent creature have to Utterson's old friend, the gentle and brilliant Dr. Henry Jekyll?Determined to uncover the truth, Utterson delves into a nightmare world of dark doorways and sealed laboratories. What he discovers is a theory too terrifying to believe: that within even the most civilized man lurks a primal, monstrous self, waiting to be set free. First published in 1886, Stevenson's masterpiece is the original and definitive exploration of the duality of human nature. A gripping psychological thriller and a landmark work of Gothic horror, it remains one of the most chilling and insightful examinations of the shadow that walks beside us all.