| Rating | Solver | Clue |
|---|---|---|
| PROBE | Investigation | |
| INQUIRY | Investigation | |
| ENQUIRY | Official investigation | |
| EXPLORATION | Geographical investigation | |
| REOPENED | Resumed (investigation) | |
| INQUISITION | Searching investigation | |
| INQUEST | Official investigation | |
| HEARING | Judicial investigation | |
| RESEARCH | Scientific investigation | |
| PERVESTIGATION | Thorough investigation. | |
| EXPERIMENT | Test or investigation | |
| INDAGATION | Search; inquiry; investigation. | |
| STONEWALLS | Obstructs investigation of ramparts | |
| BIOGNOSIS | The investigation of life. | |
| COGNOSCIBLE | Liable to judicial investigation. | |
| AUDIT | Investigation into internal fraud items | |
| CZECH | Report investigation of Prague citizen | |
| COLDCASE | Suspended investigation of cool bag | |
| CASE | Problem requiring investigation (as in church) | |
| ANATOMY | NATO locked in May, surprisingly, for investigation | |
| CHECKING OUT | Paying up and leaving the hotel after investigation | |
| CHECKINGOUT | Paying up and leaving the hotel after investigation | |
| INVESTIGATIVE | Given to investigation; inquisitive; curious; searching. | |
| FALSE REPORT | More treacherous eastern harbour could trigger Stock Exchange investigation | |
| INQUISITIVE | Given to examination, investigation, or research; searching; curious. | |