Corrected entry: During Castle's time with the hot girl from the interview, just before Beckett arrives, he makes a comment saying that he found out who the killer is by something the girl said. Only problem is that he really didn't. When she said, after he asked how one guy got away, she responded with the line "I can assure you, it had nothing to do with me", before opening her dress and straddling Castle. By this time Beckett overhears them and breaks in, meaning that there wasn't enough time for the girl to actually tell him who the guy was. This also wasn't brought up or mentioned earlier, so Castle did not find out who the killer was; there's no way.
Corrected entry: Upon discovering Alexis has been abducted, no one thinks to call her mother Meredith. Even with Castle's dislike of her, surely she deserves the right to know something has happened to her child. And since Castle frequently paints her as an over-the-top drama queen, one would think he would prefer the drama of simply telling her the truth, rather than not telling her and having her find out that he didn't tell her.Cubs Fan