Death at the Inn — John Rhode

Book cover comes from the original 1953 dust jacket edition.

Here Waghorn, newly returned from his honeymoon and sufficiently disinclined to be away from home, is faced with the task of investigating the death of Henry Bailey, found dead at Waterloo station on the arrival of the Southampton boat-train. It soon becomes obvious that Bailey was travelling incognito and before long his identity is established as Sir Hesper Bassenthwaite, wealthy businessman. Why the distinguished Sir Hesper should be travelling in disguise and how he became the victim of a poisonous injection of ricin become the puzzles Waghorn must solve.