The Nest by Cynthia D'Aprix Sweeney

The world's most dysfunctional family is poised to make it big as soon as the youngest sibling turns 40. The anticipation in cashing in on the family nest egg has led their lives - pay off mortgages, college tuition, live the good life but they didn't count on something going terribly wrong. Leo has maimed a young woman who was with him in a drunken car accident and the nest is gone. Each of the siblings must deal with the result and not kill Leo or each other in the process. This sums up every family every where at one time or another. You will find yourself laughing at their antics and amazed that their family is even more messed up on a good day than you thought your own family is at their worst.