The Risk of Falling (Hidden Falls Series Book 1)

This is the first book in a five book series about five lifelong friends who grew up in a wealthy suburb. They've always been there for each other and are each other's chosen family. This first book is about John Marsh, the billionaire in the group who is forced into sharing his best friend's little sister's condo with her while holding a company retreat at the country club they all grew up at.