The Thorn is an EP by English rock band Siouxsie and the Banshees, released in 1984, in-between the albums Hyæna and Tinderbox, by record labels Polydor and Wonderland. The Thorn features four of the band's album tracks recorded with orchestral instrumentation: "Overground" originally appeared on the Banshees' debut album The Scream; "Placebo Effect" was a song from their second album Join Hands, while "Voices" and "Red Over White" were previously released as B-sides of the "Hong Kong Garden" and "Israel" singles, respectively. The recording took place in Bavaria, in Germany. The purpose of the EP was three-fold: Siouxsie stated that she wanted to induct guitarist John Valentine Carruthers into the Banshees, to try out some string arrangements, and to simply re-record tracks that had evolved on tour. The songs from the EP were later included on the fourth disc of Downside Up, a collection of the band's B-sides.