In Elementary S04E23 the following happens:
Sherlock wonders if Moriarty tried to kill his dad to get back at him. Marcus calls and says they nabbed Krasnov. He tries to tell them he speaks no English. Gregson says he spoke just fine to the clerk at the hardware store.
Sherlock asks if he thinks they’re fools. He answers in Russian and Sherlock rattles back in Russian and says they can talk in any language you like. He says he did not set off a bomb, he’s a tourist. [Source]
Can anyone confirm what Sherlock and Krasnov are saying? The conversation is in Russian but not subtitled.