Or was it you?

Figure of speech. Picking up on Professor MacHugh's observation that Stephen and O'Madden Burke look like "communards," J. J. O'Molloy says, "Like fellows who had blown up the Bastille," and then he makes the same point with a question: "Or was it you shot the lord lieutenant of Finland between you? You look as though you had done the deed." Rhetorical theory calls this kind of interrogation erotesis or erotema––making a point stronger by phrasing it as a question that requires no answer.

John Hunt 2023

Source: www.thoughtco.com.

Source: slideplayer.com.

Source: slideplayer.com.