Death of a Nurse by M.C. Beaton
James Harrison has recently moved to a restored hunting lodge in Sutherland with his gorgeous private nurse Gloria Dainty. When Hamish visits Mr. Harrison to welcome him to the neighborhood, the old man treats him very rudely. Gloria apologises for her employer's behavior, and Hamish takes the plunge and invites her out for dinner.
On the appointed evening, Hamish waits for Gloria at the restaurant. And waits. But Gloria never shows up.
Four days later, Gloria's body washes up on the beach near Braikie. She's been strangled. Now, without a date and without his former policeman Dick Fraser - who left the force to buy a bakery - Hamish must find out who killed the beautiful new resident of Sutherland, and why, before the murderer strikes again . . .