START. Sidney: (He stands watching for a moment, and then he closes the door and turns. He comes slowly into the study and stands looking at Clifford’s side of the desk; picks up something on it, examines it, puts it down; drums on the desktop; frowns. He gets his keys out, chooses the likely one, and tries it; it won’t go in. He chooses another and tries again, more carefully; same result. He pockets the keys, frowning--and then smiles. Going up around the desk, he takes a key from a drawer on his side and continues down and around to Clifford’s side. He puts the key in; it won’t turn.) Shit. (He tries again, without luck. Taking the key out, he goes back to his side and replaces it; thinks a second and moves U. to the wall of weapons. He takes down a flat-beaded stiletto; back to the