Formed in 1991, the group released their first EP The Shades Behind in 1992, a year after the release of their first album Darkside and quickly gained status and became one of the most recognizable metal bands from Portugal being featured in all international media. Sacred Sin was the first Portuguese band to be featured on MTV Headbangers Ball with the music video from Darkside in 1993. They supported Napalm Death and Manowar and were the first Portuguese band to tour Europe with Cradle Of Filth and Vader. They got signed by BMG - Dinamite for the second album Eye M God released in 1995. The band stop activity in 2009, and returned in 2013 with the release the 20th anniversary edition of their first album. In March 2017 is released their 9th album Grotesque Destructo Art by Chaosphere Records.
December 2019 new single Born Suffer Die was released.
January 2020 new single False Deceiver is released.