| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| who writes the richard castle novels | 0.1 | 1 | 3260 | 19 |
| who is the real richard castle author | 1.34 | 0.2 | 6750 | 74 |
| books by richard castle | 0.55 | 0.9 | 3571 | 75 |
| list of books by richard castle | 0.73 | 0.4 | 1990 | 10 |
| who writes the castle books | 1.9 | 0.8 | 6460 | 87 |
| is richard castle a real author | 1.57 | 1 | 8850 | 99 |
| free richard castle books | 1.86 | 0.6 | 1085 | 81 |
| richard castle book series | 0.77 | 0.1 | 2596 | 12 |
| author richard castle picture | 0.68 | 0.9 | 7980 | 93 |
| richard castle books for sale | 1.05 | 1 | 8627 | 21 |
| books by richard castle in order | 0.71 | 0.6 | 4314 | 77 |
| richard castle books for kindle | 0.76 | 0.3 | 3256 | 44 |
| richard castle author photo | 1.84 | 0.7 | 169 | 89 |
