J. J. Connington 
Mystery at Lynden Sands [EPUB ebook] 

When caretaker Peter Hay is found dead under mysterious circumstances, Chief Constable Sir Clinton Driffield must unravel a web of secrets surrounding the Fordingbridge family estate, Foxhills. As more strange events unfold, including the shooting of a visitor and the disappearance of a Fordingbridge family member, Sir Clinton and his companions find themselves drawn into a complex case. With an unidentified woman’s footprints, a stolen diary, and suspects at every turn, the investigation takes Sir Clinton from the hotel to the seashore in search of the truth.,

Mystery at Lynden Sands is an intriguing Golden Age detective novel filled with clever twists and turns that will keep readers guessing until the very end.