| ANTHROPOLOGIST | Customs investigator in heart of Europol probing collector of gems |
| RESEARCH | Touching address finally by head of Europol leading investigation (8) |
| INAPPPURCHASE | Extra moves in "Candy Crush" or a pile of gems in "Clash of Clans" |
| SYRINGE | Extracting device from embassy, ring Europol (7) |
| RICHARDHANNAY | Itinerant ranch hand stuck in shaft with leading investigator in 5Dn 25Dn (7,6) |
| CISCO | __ Wojciechowski, Mickey Haller's investigator in the TV version of The Lincoln Lawyer (5) |
| TYPIFY | Epitomise investigator in cases of tawdry fakery (6) |
| PEARL | Said to be the "gem of queens and the queen of gems", a water jewel derived from a grain of sand, depicted in paintings by Johannes Vermeer (5) |
| EXCALIBUR | Royal weapon of unknown calibre set in a lot of gems all over |
| HAGUE | The ___: Europol headquarters |
| APIA | Private investigator in motoring organisation provides capital for Western Samoa (4) |
| INCIPIENT | Old copper becoming investigator in episode's beginning (9) |
| HARRYCRUMB | John Candy is a private investigator in 1989 comedy "Who's ___ ___?" |
| FRIAR | For example, drug supplier for 7, or murder investigator in ... (5) |
| KALINDA | Private investigator in The Good Wife, played by Archie Panjabi (7) |
| OVERPROTECT | Mother supporting investigator in public (11) |
| CHAPLIN | Charlie Chan interrupts private investigator in Latin? It's all backwards |
| CORONER | Investigator in a sudden death (7) |
| EXCHEQUER | Letter given to speaker's investigator in government department |
| SCUBADIVER | Copper, corrupt, one has arrested by senior underworld investigator in suit? |