Guilty Until Proven Insane is the fourth studio album released by Skyhooks on March 13, 1978. It was the first album that featured Bob Spencer, who replaced guitarist Red Symons in early 1977. Spencer originally played in Sydney rock band Finch and was later was a member of The Angels.Originally released as a 12" vinyl LP and also on red vinyl as a 5000-copy limited release, it was later released on CD in 1997.