Liza Birkenmeier’s The Hollower is the kind of play that tries to push the envelope in a variety of ways but ends up as effective as a pile of shredded paper. Perhaps that may be viewed as a tortured metaphor, but it’s nothing compared to the torturous path of what passes for plot in The Hollower. If you find yourself adrift after five minutes, you’ll be in full consternation when you leave.