| A | B |
| alibi | A excuse offered by an accused person for not having been at the scene of a crime |
| clue | Something that gives information toward solving the crime |
| deduction | Collecting facts and drawing a possible conclusion |
| evidence | Someone or something that proves who committed a crime |
| red herring | A false lead that throws the investigator (or the reader) off the track |
| witness | A person who has personal knowledge about the crime |
| sleuth | An investigator |
| suspect | People who appear to have a motive to commit the crime |
| motive | A reason for committing a crime |
| culprit | the person who committed the crime |
| suspense | a feeling of tension due to excitement or anxiety |