The house between tides

"Following the deaths of her last living relatives, Hetty Deveraux leaves her strained marriage behind in London and returns to her ancestral home, a crumbling estate in Scotland's Outer Hebrides, with the intention of renovating and reselling it as a hotel, much to the dismay of the locals. As she dives headfirst into the repairs, she discovers human remains beneath a rotting floorboard in the basement, with few physical clues to identify the body. Who was this person? And why the makeshift grave? Hungry for answers, Hetty sets out to unravel the estate's secret-- and those of its former inhabitants, including Beatrice Blake, a woman who moved there a century ago with her husband Theo, a famous painter who seemed to be more interested in Cameron, a young local man, than his own wife. Following whispered rumors and a handful of leads, Hetty soon discovers that no one knows exactly what happened to Beatrice, only that her actions have reverberated throughout history, affecting Hetty's present in startling ways"-- "A woman returns to her ancestral home in the Outer Hebrides and discovers a long-buried body in the basement, launching an investigation into a 100-year-old secret"--