In the novel One, Two, Buckle My Shoe, Henry Morley was Hercule Poirot's dentist. He was shot to death at his dentist's office, which he shared with a dentist called Reilly. The dental practice was located at 58 Queen Charlotte Street. Henry had a sister called Georgina and a secretary named Gladys Nevill.
Mr Morley was described as being a "small man with a decided jaw and a pugnacious chin". He and his sister occupied the two top floors of the house at 58 Queen Charlotte Street as a maisonette, and it had been his custom to come up from his surgery at half past one, to have a sandwich.
On the morning of his death, Mr Morley had been annoyed because Miss Nevill had been called away, due to her aunt suffering a stroke. Mr Morley thought that Miss Nevill might have arranged the whole thing with Frank Carter. He was annoyed because he was very busy that day, and had to see several very important patients.