| Similarity | Rank | |
|---|---|---|
| unsolvable | 0.721 | 90663 |
| murders | 0.705 | 13802 |
| unresolved | 0.700 | 22329 |
| mystery | 0.694 | 4662 |
| mysteries | 0.679 | 12935 |
| enigma | 0.677 | 37232 |
| disappearance | 0.669 | 16676 |
| murder | 0.660 | 3878 |
| unravel | 0.655 | 25224 |
| disappearances | 0.653 | 52297 |
| solved | 0.649 | 7831 |
| detectives | 0.642 | 22827 |
| paradoxes | 0.635 | 49211 |
| crime | 0.632 | 2394 |
| vexing | 0.631 | 57669 |
| crimes | 0.630 | 4857 |
| homicides | 0.629 | 44329 |
| riddle | 0.629 | 34611 |
| puzzling | 0.628 | 24981 |
| homicide | 0.622 | 20531 |
| plaguing | 0.620 | 43551 |
| whodunit | 0.617 | 96916 |
| detective | 0.616 | 12870 |
| kidnapping | 0.616 | 20573 |
| suspect | 0.615 | 3751 |