What is Laertes expecting? That Claudius has Polonius’ body right there with him? That he could just reach behind him and pull out the evidence? Presumably, Laertes already knows that his father is dead or he wouldn’t be there with a rabble of over-throwing rebels. And he presumably also knows that Claudius has had Polonius buried in a hurry. Because that’s why he finds him vile. He presumably knows that Hamlet killed Polonius – but he’s mad at Claudius, not Hamlet. It’s a funny choice. It’s a bit – like, Laertes isn’t wrong. Claudius is a vile king. He’s a murdering political monster. But Laertes doesn’t know that, presumably. Or has he been suspicious? Did he wonder, the second this all went down, if there might be some funny business? Is this what the hurry to get to France is all about? Because if he stayed, he’d start asking questions? Let his suspicions fester or go on back to Paris and stop worrying about it.
He’s a funny one that Laertes.