| A | B |
| mystery | Any afair, person, or thing that presents features so obscure as to arouse curiosity or speculation. |
| alibi | plea offered by an accused person as not having been at the scene of the 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 the track |
| sleuth | detective, investigator, gumshoe, or a private eye |
| suspects | people who appear to have committed the crime |
| witness | person who has personal knowledge of the crime |
| villain | criminal, person or thing that presents evil |