| Quote | Word(s) | Number of words |
| 'I'll be happy to let you...' | |
| Safe word of Castle | |
| 'We make a pretty good team you know, like Starsky and Hutch, ...' | |
| '...the front door!' | |
| 'I hate this case' 'I know, isn't it...' | |
| 'You smell like...' | |
| 'Do I look like a killer to you?' 'Yes, you kill...' | |
| 'He cares about you Kate. You may not see it. You..., but he does.' | |
| 'Castle, go home. Go back to your Hamptons, your ex-wife, your....I've got work to do.' | |
| 'Undercover, I like it. You might wanna pop one more...' | |
| 'she took my...Castle. What's next? My soul?' | |
| | Quote | Word(s) | Number of words |
| 'I need to go...' | |
| 'Alakazam...' | |
| 'It's not about the...anymore' | |
| 'I want you all to...' | |
| 'From now on, I'm a...' | |
| 'Don't...me!' '...you? I wanna kiss you!' | |
| 'The last thing you want is to look back on your life and wonder...' | |
| A word that Castle and Beckett said to eachother. | |
| Castle's nickname given by Meredith. | |
| Name of the last song of the season two finale. | |
| Name of Esposito and Lanie ship given by Castle. | |
|