Uh, yeah you can! was the excited comment Cathal wanted to make, delighted that a new teenager might enjoy these books that Jesse and he had bought just to collect for nostalgia sake. But he was pretty sure a teenage boy might get a lot less interested if Cathal seemed overly excited.
So instead was Cathal said, very easily, was, "sure. You can work your way through as many as you like while you're in town. Protect Marcie for the earworm aliens." He winked at her. (Was earworm aliens a think that deserved a wink? Well, it had gotten one.)