This part of the play comes when Hale is describing to the County Attorney what he discovered when he came upon the dead body of Mr. Wright:

Hale: Well, my first thought was to get that rope off. I looked... (stops; his face twitches)... but Harry, he went up to him, and he said, "No, he's dead all right, and we'd better not touch anything." So we went back downstairs...

Hale with Harry therefore discovers the body of Mr. Wright and Hale expresses his sense of shock and horror at the discovery by being unable to finish the sentence "I looked" - the stage directions provide key information as to his thoughts and feelings and facial expressions as he tries to continue but fails, leaving a further description of what he sees out of his speech.