The members of Death Metal band THE CLEANSING are no strangers to the Danish extreme Metal scene, with guitarists Andreas Lynge, Jeppe Hasseriis and lead vocalist Toke Eld having all been members of USIPIAN. This trio founded THE CLEANSING after USIPIAN folded in early 2007. Drummer Morten Løwe is known for his work with SUBMISSION, THE ARCANE ORDER and as session player for SOILWORK and SCARVE among others. Bass player Martin Rosendahl is best known as the vocalist/bass player for CORPUS MORTALE and has also been a member of INIQUITY.

In 2008 the band recorded tracks for the album 'Poisoned Legacy'. However, with Toke Eld suffering from vocal problems bassist Martin Rosendahl took over singing duties. In November the group signed with US label Deepsend Records. 'Poisoned Legacy', produced by Jacob Hansen, finally arrived in June 2009.