Perilous is the thirteenth studio album by American progressive rock band Glass Hammer, released on October 23, 2012 by Arion Records/Sound Resources.This is the last album with Jon Davison acting as sole lead vocalist, with former vocalists Susie Bogdanowicz and Carl Groves returning on the following album. It is also noteworthy to note that the song titles, when read in sequence, form a kind of poem.