Sherlock Holmes is a renowned fictional detective created by British author Arthur Conan Doyle. Known for his exceptional skills in observation, deduction, forensic science, and logical reasoning, Holmes is often referred to as a "consulting detective" and is famous for his investigative work for a wide range of clients, including Scotland Yard. The character first appeared in 1887's "A Study in Scarlet" and gained widespread popularity through a series of short stories in The Strand Magazine. Most of the stories are set in the Victorian or Edwardian eras, with Dr. John H. Watson narrating many of Holmes's adventures. The address of 221B Baker Street, London, serves as the starting point for many of their tales. Sherlock Holmes has become one of the most portrayed literary characters in film and television history, with an enduring influence on mystery writing and popular culture. Doyle drew inspiration for the character from real-life figures such as Joseph Bell and Sir Henry Littlejohn, as well as fictional detectives like C. Auguste Dupin and Monsieur Lecoq. The details of Holmes's early life and family are scarce, but references in Conan Doyle's stories provide a loose biographical outline. Despite being a fictional character, Sherlock Holmes has left a profound impact on the literary world and continues to captivate audiences across various media platforms.

Sherlock is a British mystery crime drama television series based on Sir Arthur Conan Doyle's Sherlock Holmes detective stories. Created by Steven Moffat and Mark Gatiss, the show stars Benedict Cumberbatch as Sherlock Holmes and Martin Freeman as Doctor John Watson. Thirteen episodes have been produced, with four three-part series airing from 2010 to 2017 and a special episode that aired on 1 January 2016. The series is set in the present day in which it aired. The one-off special features a Victorian-period fantasy resembling the original Holmes stories. Sherlock is produced by the British network BBC, along with Hartswood Films, with Moffat, Gatiss, Sue Vertue, and Rebecca Eaton serving as executive producers. The series is supported by the American station WGBH-TV Boston for its Masterpiece anthology series on PBS, where it also airs in the United States. The series is filmed primarily in Cardiff, Wales. North Gower Street in London is used for exterior shots of Holmes's and Watson's 221B Baker Street residence.Sherlock depicts "consulting detective" Sherlock Holmes (Benedict Cumberbatch) solving various mysteries in modern-day London. Holmes is assisted in his mystery-solving by his flatmate, friend, and companion, Dr. John Watson (Martin Freeman), who has returned from military service in Afghanistan with the Royal Army Medical Corps. Although Metropolitan Police Service Detective Inspector Greg Lestrade (Rupert Graves) and others are suspicious of Holmes

Sherlock Holmes is a 2009 period mystery action film starring Robert Downey Jr. as the iconic detective created by Sir Arthur Conan Doyle. Directed by Guy Ritchie and produced by a team including Joel Silver, the film was a commercial success, grossing $525 million worldwide and receiving positive reviews. Alongside Downey, Jude Law portrayed the loyal Dr. John Watson, while Rachel McAdams and Mark Strong delivered compelling performances as Irene Adler and villain Lord Henry Blackwood, respectively. The plot, set in 1891 London, follows Holmes and Watson as they investigate the crimes of Blackwood, who claims to possess supernatural powers. The film's success led to a sequel, "Sherlock Holmes: A Game of Shadows," and a third film is currently in development. Packed with mystery, action, and memorable performances, the film captivated audiences and cemented Downey's portrayal of Holmes as a fan favorite.

"Sherlock Holmes in the 22nd Century" is an animated television series co-produced by DIC Entertainment, L.P. and Scottish Television Enterprises. The show was conceptualized by Sandy Ross and brings Sherlock Holmes back to life in the 22nd century. Set in 2103 in New London, Inspector Beth Lestrade of New Scotland Yard discovers that Professor James Moriarty has been cloned from cells taken from his corpse, and she brings back Sherlock Holmes to combat Moriarty. Holmes, along with his compudroid Watson and the new Baker Street Irregulars, solves crimes and battles Moriarty in a futuristic setting. The series is a blend of traditional 2D and 3D CGI animation and was nominated for a Daytime Emmy for Special Class Animated Program. The voice cast includes Jason Gray-Stanford as Sherlock Holmes, John Payne as Watson, Akiko Morison as Inspector Beth Lestrade, and Viv Leacock as Wiggins. The show's episodes are inspired by the literary works of Sir Arthur Conan Doyle, with visually stunning animation and engaging storylines.

Sherlock was a file and web search tool developed by Apple for the "classic" Mac OS and early versions of Mac OS X. It was introduced in 1998 with Mac OS 8.5, expanding Finder's file searching capabilities and enabling users to search for items on the World Wide Web through plug-ins. These plug-ins were plain text files, easily customizable by users. However, Sherlock was replaced by Spotlight and Dashboard in 2005 with Mac OS X 10.4 Tiger, and officially retired in 2007 with the release of Mac OS X 10.5 Leopard. The tool's different versions, including Sherlock 2 and Sherlock 3, provided improved interfaces and functionalities before its discontinuation. Additionally, accusations of plagiarism were made by Karelia Software, LLC, claiming that Apple copied their product without permission in producing Sherlock 3. The term "Sherlocked" has since become an accepted term within the Mac and iOS developer community, referring to the phenomenon of Apple releasing a feature that supplants or obviates third-party software. Despite its discontinuation, Sherlock left a lasting impact on Mac OS users and developers.