The Midnight Feast by Lucy Foley

Midsummer, the Dorset coast In the shadows of an ancient wood, guests gather for the opening weekend of The Manor: a beautiful new countryside retreat.
But under the burning midsummer sun, darkness stirs. Old friends and enemies circulate among the guests. And the candles have barely been lit for a solstice supper when the body is found.
It all began with a secret, fifteen years ago. Now the past has crashed the party. And it’ll end in murder at… THE MIDNIGHT FEAST