A Haunted Theft (A Lin Coffin Mystery Book 4);

This is book 4 in the Lin Coffin series. Although the main mystery is solved in each story, the books should be read in order for the most enjoyment as story lines run from book to book.
While her cousin Viv attends a wished-for class on the craft of Nantucket lightship baskets, Lin Coffin visits the island's cultural museum's exhibition on the history of the woven baskets. Lin and island historian, Anton Wilson, arrive at the museum just as the staff discovers that a valuable item has gone missing.
Lin and Viv, with the help of several others, work to solve the mystery of the theft, a murder, and why a Native American ghost appears to ask Lin for help.
This story has ghosts and some mild paranormal elements.