| No. | Item | Definition |
|---|---|---|
| 1. | acquit | declare not guilty |
| 2. | alias | false name |
| 3. | alibi | proof of being elsewhere |
| 4. | apprehend | capture a suspect |
| 5. | arrest | take into legal custody |
| 6. | arson | deliberately setting fire |
| 7. | assault | violent attack |
| 8. | autopsy | medical examination after death |
| 9. | ballistics | study of bullets and guns |
| 10. | blackmail | threat for money or favors |
| 11. | bloodstain | mark made by blood |
| 12. | bribery | offering money for influence |
| 13. | bug | secret listening device |
| 14. | burglar | person who breaks in to steal |
| 15. | burglary | illegal entry to steal |
| 16. | case | particular investigation or matter |
| 17. | charge | formally accuse of crime |
| 18. | clue | a fact that helps solve crime |
| 19. | confession | admission of guilt |
| 20. | convict | find guilty in court |
| 21. | coroner | official investigating sudden deaths |
| 22. | crime | an illegal act |
| 23. | culprit | person responsible for wrongdoing |
| 24. | decoy | person or thing used as bait |
| 25. | deduce | reach by logical reasoning |
| 26. | detain | hold for questioning |
| 27. | detect | discover or notice something |
| 28. | detective | investigator of crimes |
| 29. | DNA | genetic material used for identification |
| 30. | eavesdrop | listen secretly to others |
| 31. | evidence | information proving or disproving guilt |
| 32. | extortion | getting something through threats |
| 33. | felon | person guilty of serious crime |
| 34. | fiber | tiny thread used as evidence |
| 35. | fingerprint | unique mark left by fingers |
| 36. | footprint | mark left by a foot |
| 37. | forensics | scientific crime investigation methods |
| 38. | forgery | fake document or signature |
| 39. | fraud | deception for gain |
| 40. | fugitive | person fleeing the law |
| 41. | getaway | escape after a crime |
| 42. | gunshot | shot fired from a gun |
| 43. | hideout | secret place for hiding |
| 44. | homicide | killing of one person |
| 45. | indictment | formal criminal accusation |
| 46. | infiltrate | enter secretly to gather information |
| 47. | informant | person giving secret information |
| 48. | interrogate | question formally to get information |
| 49. | investigate | to examine a crime carefully |
| 50. | jail | place for holding prisoners |
| 51. | kidnapping | taking a person by force |
| 52. | killer | person who causes death |
| 53. | knife | sharp weapon or tool |
| 54. | lead | promising piece of information |
| 55. | lineup | group shown for identification |
| 56. | manhunt | search for a wanted person |
| 57. | manslaughter | unlawful killing without murder intent |
| 58. | marshal | federal or court officer |
| 59. | mastermind | person planning the crime |
| 60. | mole | secret insider informant |
| 61. | morgue | place where bodies are kept |
| 62. | motive | reason for committing a crime |
| 63. | mugshot | police photograph after arrest |
| 64. | murder | intentional unlawful killing |
| 65. | observe | watch carefully |
| 66. | offender | person who broke the law |
| 67. | perpetrator | person who committed the act |
| 68. | poison | substance causing injury or death |
| 69. | prison | place for long-term confinement |
| 70. | probe | investigate deeply |
| 71. | pursue | chase or continue following |
| 72. | pursuit | act of chasing someone |
| 73. | question | ask for information |
| 74. | raid | sudden police search |
| 75. | ringleader | head of a criminal group |
| 76. | robber | person who steals by force |
| 77. | robbery | theft using force or threat |
| 78. | sample | small piece for testing |
| 79. | search | look carefully for something |
| 80. | smuggling | illegal transport of goods |
| 81. | solve | find the answer to |
| 82. | stakeout | secret watch on a location |
| 83. | statement | official account of events |
| 84. | surveillance | close observation of a person |
| 85. | suspect | person thought possibly guilty |
| 86. | tail | follow secretly |
| 87. | testimony | formal spoken evidence |
| 88. | theft | taking property unlawfully |
| 89. | tip | useful piece of inside information |
| 90. | toxicology | study of poisons in bodies |
| 91. | trace | small amount left behind |
| 92. | track | follow signs or movements |
| 93. | trespass | entering property without permission |
| 94. | vandalism | deliberate property damage |
| 95. | verdict | jury’s decision |
| 96. | victim | person harmed by a crime |
| 97. | warrant | official permission for legal action |
| 98. | weapon | object used to harm |
| 99. | wiretap | secret phone listening |
| 100. | witness | person who saw something happen |