Out for a bicycle ride in the hills beyond Inversgail, Janet Marsh discovers the body of Dr. Malcolm Murray. The elderly Murray and his own bicycle went off the road and down a steep slopeâheâs sprawled in the burn at the bottom, his damaged bike in a patch of thistles on the bank. Tire tracks at the side of the narrow road suggest a vehicle might have been involved. But who would want the well-loved retired doctor dead? A few days after the death, a box of vintage first editions is left on the doorstep of Yon Bonnie Books with a note: âPlease look after these books. Thank you.â Janet and her crew at the shop are at first delighted, and then mystifiedâwhat exactly does âlook afterâ mean? Are they free to sell them? And what are the odd notes penciled in the margins? With a little digging, the women decide the books might belong to Malcolm Murray or his reclusive brother, Gerald. When Janet and Christine call at Malcolmâs house, they find his confused, angry sister and evidence of a burglary. When they go to Geraldâs modest croft house, they find the door ajar and Gerald dead inside, stabbed with a regimental dagger. While the police try to determine if the Murray brothersâ deaths are connected and whoâs responsible, Janet and the bookshop owners try to find out how and why the box of books ended up on their doorstep. The police are interested in those questions, too, and theyâre more than a little suspicious. Are the Yon Bonnie women as good with burglar tools as they are with booksâand at finding bodies?