In this chapter, we learn that Oswald is not yet accused of killing Polonius. He has not been proven guilty, but he wants to figure out the whole thing. He wants to find out who the real killer is. He thinks that Oswald might be able to find a poison that wouldn't be easily identified by the best doctors in the capital. If Oswald were to find the killer, he could kill him instantly. But if Oswald had to wait until the next day, he'd have a better chance of finding the killer. He tells Oswald that if he doesn't find the murderer before the next morning, Oswald will be beaten