Novel by 2 co-authors, translated from Italian, missing person found buried on beach.

Library book I read in the 90's, written around then I guess. Set in an out-of-season isolated seaside community, rather dark and bleak, chalets among the trees, wet windy weather, someone disappears, body eventually found on beach, but it is much more than a mystery story. I would like to read it again, and anything else by the two (male) authors.
Ring any bells?

My first association would be Fruttero & Lucentini, but I cannot find a plot to match your description. Maybe Enigma by the sea?

ETC

That is it, I am sure. Thank you Miss Watson!

Nice to know I could help.