Killers' is the sophomore album by British metal band Iron Maiden, originally released on 2 February 1981 in the UK, and 6 June 1981 in the US. The album was their first with guitarist Adrian Smith and their last with vocalist Paul Di'Anno. This was also the first Iron Maiden album made with veteran producer Martin Birch, who went on to produce their next eight albums before retiring after 'Fear of the Dark' in 1992.