| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| who wrote richard castle books | 1.48 | 0.5 | 2742 | 22 |
| who actually wrote the richard castle books | 0.33 | 0.6 | 8692 | 67 |
| list of books by richard castle | 1.02 | 0.7 | 2191 | 76 |
| who wrote the castle books | 0.41 | 0.7 | 2479 | 34 |
| who is the real richard castle author | 1.72 | 0.1 | 1044 | 61 |
| who writes the castle books | 1.35 | 0.1 | 2334 | 93 |
| free richard castle books | 1.32 | 1 | 8247 | 83 |
| richard castle books for sale | 1.16 | 0.4 | 5733 | 57 |
| richard castle books for kindle | 1.05 | 1 | 7885 | 96 |
| books by richard castle in order | 0.24 | 0.9 | 9942 | 84 |
| is richard castle a real author | 1.53 | 0.5 | 9599 | 29 |
| richard castle book series | 0.06 | 0.5 | 8043 | 15 |
| author richard castle picture | 1.55 | 0.6 | 8662 | 63 |
