The Turn of the Screw is one of Benjamin Britten’s tautest, most gripping operas. And, unlike much of the repertoire that the local, small-budget companies take on, this chamber opera is conceived on a scale that emphasizes the virtues of West Edge Opera, which presents the piece beginning July 20. This is certainly a score with an edge, and the cast that the company has assembled – Laura Bohn as the Governess, Merola alum Daniel Curran as Peter Quint, Buffy Baggott as Miss Jessel – looks first-rate on paper. If you’re looking for a local performance to celebrate Britten’s centenary, this could be it.