When members of a choir start dropping dead in the Highlands, Maud McIntyre and her lady’s maid Daisy go undercover to discover the inharmonious culprit. But will they uncover the killer before another murder takes place?

Edinburgh, 1911: When Maud and Daisy receive a letter from Daisy’s cousin, Clara, sharing her fears that two sudden deaths in her local choir weren’t accidental, at first Daisy thinks her cousin is overreacting. But Maud’s detective senses tell her something is afoot, and so they make haste to the Highlands to investigate.

As soon as they arrive, Maud and Daisy go undercover in the choir to find potential suspects. But with one murder deemed a heart attack and the other declared an unfortunate drowning, Maud and Daisy have their work cut out when it comes to persuading the local police that perhaps the choir isn’t as perfectly in tune as everyone thinks....

But finally they receive a clue in the form of an anonymous letter. Enclosed is a rhyme that they’re certain holds the key to the next murder....

With the clock ticking down to another death, they know they can’t miss a beat—but will Maud and Daisy solve the mysterious rhyming verse before another singer is silenced, or will this case lead to their own untimely swan song?

A gripping historical whodunnit, perfect for fans of the mysteries of Helena Dixon, Verity Bright, T.E. Kinsey, and Catherine Coles.