Lethal Presence stormed on the Toronto thrash metal scene from 1984 to 1988. Most notably they took part to the seminal proto-death metal manifesto "Raging Death" LP alongside SADUS, XECUTIONER (Obituary), R.A.V.A.G.E. (Atheist) and BETRAYEL. This tape features their seminal "Unholy Alliance" Demo from 1986, mastered from the original tape. After Lethal Presence demise in 1988 Bobby Sadzak went on with SLAUGHTER/STRAPPADO with whom they re-recorded a couple of old Lethal Presence tunes.