How bad is it? It runs out of steam and there is no ending, but it's mildly creepy.
Should you see it? There's not enough to recommend.
A woman saw her mother kill three people during the mother's back alley exorcism, then gets involved in other similar non-church exorcisms in order to find out what happened. The film sets up several possible sub-plots that go nowhere and tries to deliver shocks without standard Hollywood helps like eerie music, but it ends with a very unsatisfying unresolved finale that sets up a possible sequel. Though critically panned and a short theatrical release, the film seems to have made money.