As reported on One Of The Three website, Assassin is a b-side from James’ 1994 single Jam J / Say Something. It also appeared on the B-Sides Ultra album.
It was recorded during the Laid sessions but missed the cut for the album and was never performed live. It’s notable for featuring Mark Hunter’s debut on guitar.
Starring Elena Bonfanti as cover model, the song is a funky little number with Booth drawing out the word “Asssssasssin” ’til it hurts.