The Cottage on Plum Island by Amy Rafferty

Jennifer Gains is a successful editor at a prestigious New York publishing house who’s dragged back to her bittersweet past by a new television series.

Five years ago, Jennifer left behind Plum Island and the beloved aunt that raised her after her mother’s untimely death. Coming back is bittersweet, but work calls, and she’s caught up in helping her friend produce her new television series, Cobble Cottage Mysteries series.
Until she visits her Aunt Betty to find the Beach Plum Cottage in disrepair and her aunt gravely ill. Dedicated and practical as always, Jennifer immediately sets about fixing things. She doesn’t want Aunt Betty to call upon the old island contractor, but when she sees a rugged man with piercing green eyes, her thoughts—and heart—flip on their head.