The Invitation (2015)

Released April 8, 2016, in the US.
Filmed entirely in California.
The story: Will is invited, along with his girlfriend, to his ex-wife Eden and her boyfriends' home for a dinner party.
The party will basically consist of all prior friends of Will and Eden from when they were still married and it will be at Will and Eden's previous home, where Eden and her new beau are now living.
It has been two years since Will has seen any of the people at the party and it's all a bit awkward for him, especially seeing how losing his only son with Eden is what broke up their marriage.
Will tries his best to be comfortable but things seem off to him.
He is continuously roaming around the house and seeing things that he finds strange.
Then the group plays an honesty game at Eden's boyfriend's request.
Will and the other guests that know each other get a bit freaked out to learn that Eden and her boyfriend have been attending a healing retreat.
Will believes the retreat is really just a cult and Eden has now lost all her marbles.
Then , after the honesty story Eden and her boyfriends' friend tells about accidentally but violently killing his wife, one of their guests decides to leave.
When Will finally gets some phone service and listens to a message from a friend who is supposed to be at the party, he loses his shit and his girlfriend wants them to leave.
But... they stay on, until... well, after dinner the wine is served...
Stars Logan Marshall-Green, Emayatzy Corinealdi, Michelle Krusiec, Mike Doyle, Jordi Vilasuso, Marieh Delfino, Tammy Blanchard, Michiel Huisman, Lindsey Burdge, Jay Larson, John Carroll Lynch
Directed by Karyn Kusama
Not Rated
MYSTERY/THRILLER/HORROR