Sleuth is a digital cable television channel with programming dedicated to the crime and mystery genres. Sleuth's original tagline was "Mystery. Crime. All The Time." In early 2008, the channel unveiled a new tagline: "Get Clued In." It is owned by NBC Universal and is the latest addition to their line up of digital cable TV channels. It launched January 1, 2006, replacing Trio. Sleuth debuted on DirecTV on June 1, 2006, and on Dish Network nine days later.

Sleuth features crime and mystery programming from NBC Universal's extensive library of feature films, classic television shows, reality series and documentaries. Programming initially included popular and cult television series like Simon & Simon, Miami Vice, The A-Team, Dragnet (1967 and 2003 versions), Knight Rider, The Equalizer, Homicide: Life on the Street and more recent cancelled series like EZ Streets, Karen Sisco, and Deadline.

Crime, mystery and suspense films like Scarface, The Jackal, Casino, Sneakers and Mercury Rising will be in the standard- and high-definition lineups, with at least 20 hours of content from the channels offered on demand at any given time to consumers.

In January 2007 Sleuth began airing Profiler, Magnum, P.I., The Rockford Files, Turks, and Medical Investigation.

On February 25, 2007, Sleuth aired a fourteen-hour movie marathon entitled "Chiller On Sleuth" to promote the launch of Chiller, NBC Universal's cable channel dedicated to horror programming that launched on March 1, 2007. The movies that aired during this marathon are Wait Until Dark, Psycho (1998), I Saw What You Did (the 1988 version), and The Island. date=2007-02-25&end_date=2007-02-25" target="_blank">http://www.sleuthchannel.com/Schedule/daily.bravo?start_date=2007-02-25&end_date=2007-02-25 In the advertisement for the aforementioned marathon, it was revealed that Chiller will be available on channel 257 on DIRECTV.

New series for 2008 include _Keen Eddie, New York Undercover, Robbery Homicide Division and Players.