| A | B |
| alibi | A plea offered by an accused person of not having been at the scene of crime. |
| clue | Something that appears to give information toward solving the 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. |
| motive | Reason for committing a crime. |
| witness | Person who has personal knowledge about the crime. |
| interrogate | Ask questions concerning the crime. |