'I think,' answered Frodo slowly, 'that it was a good guess, as far as it goes. There is a connexion with Bilbo's old adventures, and the Riders are looking, or perhaps one ought to say searching, for him or for me. I also fear, if you want to know, that it is no joke at all; and that I am not safe here or anywhere else.' He looked round at the windows and walls, as if he was afraid they would suddenly give way. The others looked at him in silence, and exchanged meaning glances among themselves.It is not,' said Frodo. "Though I am not sure that I understand you. But how have you learned all this about the Ring, and about Gollum? Do you really know it all, or are you just guessing still?'