For adults, not teen fiction.
Most Helpful Girl
All the books below i recommend just mainly because they are some of my faves...
The Songlines by Bruce Chatwin www.goodreads.com/book/show/76844.The_Songlines
The Mango Opera (An Alex Rutledge Mystery #1) by Tom Corcoran www.goodreads.com/book/show/511118.The_Mango_Opera
Don't Stop the Carnival by Herman Wouk www.goodreads.com/.../42988.Don_t_Stop_the_Carnival
Challenging the Deep by Hans Hass www.goodreads.com/.../2500883.Challenging_the_Deep