Review: OnStage Playhouse’s ‘Knock Loudly’ is stylish but unfocused

Review: OnStage Playhouse’s ‘Knock Loudly’ is stylish but unfocused

In the 1950 film “Sunset Boulevard,” an aging silent film star hatches a plan for a comeback on the silver screen. If you’ve seen the black-and-white film and Gloria Swanson’s hyper-dramatic performance as Norma Desmond, you’ll feel a sense of déjà vu watching Anna Sandor’s “Knock Loudly,” a play that opened last weekend in its world premiere at OnStage Playhouse in Chula Vista. In Sandor’s play, long-retired film star Constance Crowne swans aro…