Cloo (formerly Trio, then Sleuth) was a digital cable television channel with programming dedicated to the crime and mystery genres.
On August 15, 2011, Sleuth was renamed as Cloo in order for NBCUniversal to trademark and own the name. The channel's previous name was also considered to be too commonplace in search engines. On February 1, 2017, the channel ceased operations due to low ratings.
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