"Sherlock" is the fourth EP of South Korean boy group Shinee. The EP consists of seven tracks including the title song "Sherlock (Clue + Note)" a hybrid remix of the two songs. It was released on March 21, 2012, in South Korea under the seal of the label S.M. Entertainment and distributed by KT Music. The album was made available online worldwide on March 19, 2012. The EP is Shinee's first Korean release after a year and 6 months hiatus.