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Mark Leslie Norton (February 7, 1956 – April 5, 2007), better known as Mark St. John, was a guitarist known for his brief work with the rock band Kiss. He was only with Kiss a short time, but he was featured on the album Animalize, the second album of the "unmasked" period. St. John's only video appearance with Kiss is in the video for the hit single "Heaven's on Fire". After leaving Kiss, he formed a band called White Tiger. Mark St. John died on the morning of April 5, 2007, of a cerebral hemorrhage.