What is the resolution of the man with the twisted lip?

In "The Man with the Twisted Lip," the resolution occurs when Sherlock Holmes uncovers the truth behind the apparent disappearance of Neville St. Clair, who is believed to have been murdered. Holmes reveals that St. Clair is living a double life, disguising himself as a beggar to support his family financially. The story concludes with St. Clair's return to his normal life, and the case is resolved without any crime committed, highlighting themes of deception and social class.