Esoteric Warfare is the fifth full-length studio album by Norwegian black metal band Mayhem. It was released by Season of Mist on 6 June 2014 in Europe and Asia, and on 10 June 2014 in North America. It is the band's first album with Teloch on guitar since Blasphemer's departure from the band in 2008. As with the previous album, the lyrics focus less on the classically Satanic themes of the band's early work, instead referring to occult and conspiracy theory concepts such as psychic powers, mind control and alien tampering with human evolution. (For instance, the song "Corpse of Care" appears to be a direct allusion to Bohemian Grove and the Cremation of Care ceremony performed there.)