Lock Up the Wolves is the fifth studio album by the American heavy metal band Dio, released on May 15, 1990. It displayed a complete change of musician line-up over the previous Dream Evil album, including eighteen-year-old guitarist Rowan Robertson, and Simon Wright on drums who had played with AC/DC from 1983-89. The song Evil On Queen Street takes it title from a deli in Toronto who had a sandwich with that name - per Dio on Much Music in 1990.