Lots of dramas are “dark.” But the shadows of Harold Pinter’s The Homecoming stretch from the stage over the audience: Uncontrollable and contagious, the play’s primal darkness becomes part of you (or, worse, was there all along). Pinter’s masterpiece of suspense centers on the return of Teddy, a philosophy professor in America, to the North London home of his father, uncle and brothers, who scrape by on the fringes of working-class society. With Teddy is his wife, Ruth, whose presence ignites a fierce competition for her attention … with riveting, unpredictable results. Now this Tony-winning play returns to Los Angeles for the first time in a decade. Guillermo Cienfuegos directs a Pacific Resident Theatre production already named a “Critics Choice” by the Los Angeles Times.