A TV series I like Sherlock very much,I think Sherlock in this TV series,Different from the book, He Use the technology of twenty-one Century ,Solve one puzzle after another,The most skillfully thing is that it echo with the original story so well, Whether it's in the book or in the TV, I still can't keep up with the idea of genius. I think season1 and season2 are the best, Start of the season 3,There was more depict around the human touch of Sherlock, Season 4 added the emotional line,I think it is much better, it made the character more abundant ,Otherwise,the main character is always too far away, The TV series update very slow ,But the production is excellent,each case reveals something about human nature, I'm really looking forward to what happens in future.