Knives is the fourth studio album released by post-hardcore band Aiden. The album will see a return to Aiden's older post-hardcore style, compared to the the alternative rock of Conviction (album). The album was released on May 11, 2009 in the UK and May 12, 2009 in the United States through Victory Records. The band has described this album as, "raw, it's fast, it's pissed." It has been recorded and produced by WiL at his own studio, Sleepy Hollow, in Seattle.