An ebook I've been dipping into on and off for a while now (one of my waiting room options), this is another story in the Burford Family Mysteries - classically set in the large Country Home of the 1930s.
From the Blurb:
The theft of the diamond necklace and the antique pistols might all be explained, but the body in the lake - that was a puzzle. "Don't expect me to solve anything," Inspector Wilkens announced modestly when he arrived to sort out the unpleasantness. And at a house party that included English aristocracy, foreign agents in disguise, a ravishing baroness, a daring jewel thief, a Texas millionaire, and of course, the imperturbable butler, it was going to take some intricate sleuthing to uncover who killed whom and why.
The theft of the diamond necklace and the antique pistols might all be explained, but the body in the lake - that was a puzzle. "Don't expect me to solve anything," Inspector Wilkens announced modestly when he arrived to sort out the unpleasantness. And at a house party that included English aristocracy, foreign agents in disguise, a ravishing baroness, a daring jewel thief, a Texas millionaire, and of course, the imperturbable butler, it was going to take some intricate sleuthing to uncover who killed whom and why.