The Exorcism review " devilishly tricksy haunted-house tale
Battersea Arts Centre, LondonShifting between eerie ghost story and broad comedy, Ross Sutherland's intriguing solo show about demonic possession never quite makes its intentions clearJust as there's no consensus on what leads to cases of demonic possession (mental illness, an over-fertile imagination, or the devil's work?), so, too, Ross Sutherland's solo show could be one of several things. Is it a comedy, a piss-t…