Photos: Carol Rosegg Writing about Peter Sinn Nachtrieb’s marvelous Boom is going to require a bit of bomb squad finesse: after the first twenty minutes, the action takes such an unexpected left turn that to describe it without spoilers won’t be easy. And that’s not to say those first twenty minutes are very conventional, either; the play begins when a woman with a nametag that reads Barbara (Susan Wands) welcomes the audience with all the......