The Dissection of Jack & Jill (2017)

Murder is the main-course served at Jack and Jill's swingers party. Alex and Carrie show up thinking they will be hooking up with an ordinary couple only to find that the Jones' are anything but ordinary. They celebrate their anniversary with a web of promises, including good food and sex, but when the evening winds down to dessert Jill serves Jack's favorite, Blood Pudding.