This novel is set in Truro, Maine, (where Hopper painted) and NYC. A first person narrative in which the characters have distinctly different voices. The small community is clearly portrayed, both summer people and year 'rounders.
I consider it an adult novel because the characters are grown-ups and face grown-up issues -- marriage, relationships with children, adultery, loyalty in friendships and such. As in most of life, none of the characters are truly bad people, just people with their own personal flaws who are doing the best they can under the circumstances.
I enjoyed "Trophy House" and will be reading more of Bernays novels. Years ago, I remember reading her "Growing Up Rich," and found the novel so convincing I thought it was an autobiography (it was a rented audiobook, with no dust-jacket blurb or library shelving info on the spine).
The only reason I selected "Trophy House" was because of my liking for "Growing Up Rich." Now I'm on the prowl for more Bernays titles.