Sherlock season story based on the series of written by Sir Arthur Conan Doyle Sherlock is a fictional character which lives in 221 B Baker Street in UK is solved crime mysteries and in the show there are totally Four Seasons right now the first season Sherlock meets his best friend Dr Watson and then restart to solved mysteries together in the second episode Sherlock and his friend doctor Watson encounter Chinese gang known as Black lotus and fights with them and also confesticate a Jade hair pin world's 9 million pounds in the third episode Sherlock and his friend doctor Watson and counters a man known as James moriarty who is the criminal consultants and was behind a serial bomb case at the end of the episode James trip Sherlock and planted a Bom on doctor Watson and the first season ended there.
In the second season we saw a preview of the ending of first season 3rd episode in which John is taken as a Hostage but suddenly James received a call and it changes his mind he let John and Sherlock go after sometime they receive a call from his friend Inspector Craig about the kids and from there Sherlock and John are called in the Buckingham Palace and the receiver case
And there is so much for me to tell you but I recemand to see this show it is availibe on youtube dont forget to watch it