Is dr.roylott an obious villain or suspect?

Dr. Roylott is an obvious suspect in Arthur Conan Doyle's "The Adventure of the Speckled Band" due to his violent nature and motives surrounding his deceased wife’s inheritance. His aggressive behavior and the mysterious circumstances of her death cast a shadow of suspicion over him. Additionally, his attempts to control and intimidate Helen Stoner further reinforce the idea that he is a villain. However, the story also plays with the theme of appearances versus reality, inviting readers to consider deeper motivations behind his actions.