Robert Louis Stevenson 
The Strange Case Of Dr. Jekyll And Mr. Hyde 

A psychological thriller that brings to light how mental illnesses have been deemed as something evil and so many plots have been woven around. As the title of the book suggests, it a Strange Case of the Dr Jekyll and Mr. Hyde, who take the reader through a series of mysteries and events in gripping plot. Shadowed with mystery, disgust and sometimes to downright abhorrence, Robert Louis Stevenson takes his readers through roller coaster while bringing to light the fact mental illness was never seen as illness in the first place, rather am evil to be exorcised.