I'm new to the Hamish Macbeth series. I read Death of a Poison Pen (set later than this novel) and thoroughly enjoyed it. Poison Pen had a lot of charm and funny characters, something this series is known for.
Death of a Cad is not quite as good as that one. It starts out as more of a typical mystery with the usual rich, English suspects sitting around in a big house. But once Hamish gets into the act, it gets a lot better. If this is the first book in the series you read, you'll still enjoy it, but if your impression is lukewarm, don't stop with this book. Read Death of a Poison Pen and other books in the series. I think you'll be charmed by the humor and characterizations. I plan to read more of this series.