See my full review at Mystereity Reviews
Much Ado About Muffin has Merry returning from an extended stay in Spain to find that Roma, an overbearing opera singer, has come to stay at Wynter Castle and has managed to rub everyone in Autumn Vale the wrong way, especially thorny postmistress Minnie Urqhart. Soon after arriving home, Merry finds Minnie dead, stabbed with a letter opener that looks like one Roma had when she threatened Minnie on a previous occasion. Merry knows Roma didn't kill Minnie, and sets out to find the real killer.
The main plot, solving Minnie's murder, was done quite well; several suspects with motives and lots of plot twists made for a riveting read. The subplots, with Shiloh acting strangely and Emerald seemingly caught up in the cult-like Consciousness Calling group added to the suspense and kept me guessing and turning pages through the book.
This can be read as a stand-alone, as prior events are explained (and not a hindrance to the story) but I recommend reading the series in order, because there are some on-going plot threads that would be better understood if the book are read in order.
And I am going to make those chocolate walnut muffins very, very soon. *drool*