Emily Arundell - Mistress of the Little Green House. Wilhelmina Lawson (Minnie) - Miss Arundell's maid. Bella Biggs - Miss Arundell's niece, Mrs Tanios. Dr. Jacob Tanios - Bella's husband. Theresa Arundell - Miss Arundell's niece. Charles Arundell - Miss Arundell's nephew. John Lefton Arundell - Miss Arundell's father (deceased). Caroline Peabody - Miss Arundell's girlfriend. Dr. Rex Donaldson - Theresa's fiancé. Thomas - Miss Arundell's brother (deceased). Purvis - lawyer. Ellen - Miss Arundell's maid. Isabel Tripp - Lawson's girlfriend.

Julia Tripp - Isabel's older sister. Dr. Granger - The doctor of the town of Markt Basing. Arabella - Miss Arundell's sister (deceased). Matilda Ann Arundell - sister of Miss Arundell (deceased). Agnes Georgina Mary Arundell - sister of Miss Arundell (deceased). Hercule Poirot - private detective. Hastings - Poirot's friend. Gabler - Realtor. Jenkins - Gabler's secretary. Anne - Miss Arundell's cook. Angus - Miss Arundell's gardener. Carruthers - Miss Arundell's dying nurse.