Describe Sherlock Holmes.

Sherlock Holmes is a brilliant and eccentric "consulting detective," Holmes is a rather enigmatic figure. His knowledge is specialized yet diverse. He is a talented violin player and chemist, and is well-versed in sensational literature. It is implied that he is involved in some drug usage, although this is never explicitly stated. His success in solving crimes stems from his ability to observe and deduce. He has a tendency to be moody and he sometimes experiences profound depression; he is also very solitary.