THE SEA GARDEN by Sam Llewellyn

When Victoria and Guy Blakeney-Jones inherit the tiny Cornish island of Trelise, it seems they are stepping into an idyll.  The islanders are friendly.  The legendary sub-tropical gardens, laid out by Guy's ancestors on the site of an ancient monastery, await restoration.  The future looks bright...

But the past looks increasingly dark.

As work in the garden proceeds, Victoria becomes enmeshed in mysteries hidden beneath the overgrown walks and terraces - the unexplained death of a child, a skeleton with a fractured skull unearthed in the Sea Garden.  Seeking explanations, she starts to dig through the truckloads of family letters and diaries in the house's cavernous attics.

But as she delves into 150 years of the history of Trelise, she sheds light on family secrets best left buried. Secrets that germinate and grow into a nightmare that threatens to tear apart the island, her marriage, her life...

Soft cover, fairly good condition.  The cover shows some signs of wear.