THE MYSTERIOUS AFFAIR AT STYLES
Characters - Alphabetical
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| FIRST NAME | LAST NAME | DESCRIPTION |
| Dr. | Bauerstein | A doctor expert in poisoning. |
| John | Cavendish | Hasting's acquaintance. |
| Lawrence | Cavendish | John's brother. |
| Mary | Cavendish | John's wife. |
| Mr. | Cavendish | John's father. |
| Mrs. | Cavendish | John's mother. |
| Arthur | Hastings | Narrator. |
| Ernest | Heavyweather | John's lawyer. |
| Evelyn | Howard | Emily's closest friend. AKA: Evie. |
| Alfred | Inglethrop | Emily's new husband. |
| Emily | Inglethrop | Alfred's mother. The owner of Styles Court. |
| Mr. | Inglethrop | Alfred's father. |
| James | Japp | Scotland Yard detective inspector. AKA: Jimmy. |
| Mr. | Mace | The chemist shop owner. |
| Cynthia | Murdock | Daughter of Emily's close friend. |
| Mr. | Philips | Prosecution lawyer. |
| Hercule | Poirot | Protagonist. |
| Mrs. | Raikes | Emily's neighbor. |
| Mrs. | Rolleston | Lady Tadminister's sister. |
| Lady | Tadminister | The first lady of Tadminister. |
| Mr. | Wells | Emily's lawyer. |
| Dr. | Wilkins | Emily's doctor. |
| Annie | One of the house maids. | |
| Cook | Emily's chef. | |
| Cynthia | Mrs. Cavendish's protégé. | |
| Dorcas | Parlour maid. | |
| Manning | Emily's gardener. | |
| Ross | The caterer in Tadminister. | |
| Summerhaye | Japp's superintendent. | |
| William | The young gardener. |
