What is the plot of Sherlock, the lying detective?

After Mary was killed, Watson often had hallucinations, as if Mary was still with her. Watson also bears a grudge against Shylock, thinking that he killed Mary, so he stopped contact with Shylock and Watson began to consult a physical therapist for treatment. Shylock continued to take drugs, and he was a little insane. Smith's daughter Faith came to Shylock and told him that her father said he was going to kill someone, but she couldn't remember his name, which almost ruined her life. Tell Sherlock Faith that she is busy and ask her to leave. Before Faith went out, Shylock caught up with him, reminding Faith to ignore it and tormenting himself. Faith and I went out, ate French fries and stayed all night. But then the faith suddenly disappeared. Shylock realized that Smith wanted to kill anyone.

Shylock revealed in his blog that Smith was a murderer. His room was plastered with photos of Smith, and he even beat them with a gun. Mrs Hudson, the landlord, worried about Shylock, took him to Watson's residence, which Shylock told her beforehand, and threatened Watson to help Shylock. Smith sent someone to pick up Shylock and Watson, showed them an advertisement that he played a murderer, and showed them around the hospital. Shylock sent a short message to Faith on Smith's mobile phone in advance, telling her to come to the hospital to see Smith. Smith showed Shylock and Watson around his favorite morgue, but Faith's arrival was very shocking. She is completely different from Faith in Shylock's impression, and she has never met Shylock. Shylock picked up a scalpel and tried to kill Smith, but Watson stopped him and beat him up. He was sent to a hospital sponsored by Smith.

Smith entered Shylock's ward through the secret passage he secretly built and tried to kill Shylock. He admitted his crime and explained that he liked the pleasure of killing people. At the same time, McCaffer, Mrs Hudson and Watson all got together. Watson found the video left by Mary and knew that it was Mary who asked Shylock to spy on the case in order to save Watson who was on the verge of pain. Sherlock directed and played. At this time, he was in danger. Watson arrived in time to save Shylock who was caught by Smith. Shylock installed a recording pen in the crutch sent by Watson in advance as Smith's confession information. Afterwards, Shylock thought it was an illusion to find faith before.