Present in this first novel by 'This Is Where I Leave You'-writer Tropper :
A tad Jackie Collins (sexy, beautiful women, big love, a celebrity with a cocaine habit)
+ A lot of 'Friends' (1990s yuppies, a tight group of friends, incessant punchlines)
+ Heavy 'The Big Chill' inspiration (relational melodrama in a wooden cabin in the forest, an absent friend, midlife crisis).
Original? Not so much.
Entertaining? That, too.
Also : A demonstration of how tough single-voice narration can be to pull off...