| A | B |
| alibi | a plea offered by an accused person of not having been at the scene of a crime |
| clue | something that appears to give information towards solving a crime |
| deduction | collecting the facts and drawing a possible conclusion |
| evidence | someone or something that proves who committed the crime |
| red herring | a false lead that throws the investigator off track |
| sleuth | an investigator or detective |
| suspects | people who appear to have a motive to have committed the crime |
| witness | person who has personal knowledge about the crime |