Dastardly Deeds — Ilsa Evans

It was supposed to be the holiday of a lifetime ...
When Nell Forrest's life hits a speed bump (which is most definitely "not" a midlife crisis) a cruise around the Mediterranean seems like just the ticket.
Unfortunately, that's an idea shared by her mother, her ex-husband, his new partner, and a police detective with whom Nell has a stormy history. Fortunately, meditation is just one of the many activities offered aboard the luxury liner, but Nell will need more than that to face what lies ahead.
A tragic death in Rome is quickly followed by another in Turkey. Then an unexpected discovery provides a link between the two, and Nell must stow her plans for relaxation once and for all.
One of her shipmates is a cold-blooded murderer, and it seems that Nell is the only one with the wherewithal to figure it out. But figure it out she must, because the murderer, like the cruise, has only just begun ...
"Dastardly Deeds" is the fourth book in Ilsa Evans' Nell Forrest Mystery series. The other three are "Nefarious Doings," "Ill-Gotten Gains" and "Forbidden Fruit."
This cosy mystery is perfect for fans of Alexander McCall Smith, M.C. Beaton, Kerry Greenwood and Joanna Fluke.