4.5 stars. Nice little novella although I usually prefer a longer book. It took about a third of it for me to orient myself as to why Muirteach McPhee was in that place, as well as where that place was located.
The water-horse is a mythical creature which could be Nessie, as of course Muirteach was at Loch Ness. The beast or water horse or kelpie, as Muirteach said spoke with Uisdean's voice "or perhaps I heard the words in my mind. "
However or whatever it was, you see, had killed Dubhglas and his wife Sorcha. Celtic monsters are said to be still seen in lakes in Scotland, as well as actual vicious fish off the coasts.
A delightful small book. I recommend Susan McDuffie's characters.