As played by Mark Duplass, Jack is a sweet guy, though that’s not really something you’d guess from his lashing out at the friends who are trying to celebrate his brother’s life at the memorial service that starts Your Sister’s Sister.
It’s been a year since his brother’s death, but Jack is still in such a deep funk that his best friend, Iris (Emily Blunt), who is also his brother’s ex-girlfriend, decides it’s time for an intervention. Kindly, and with the sort of patience that he’s not showing himself, she sends him off to her family’s secluded island cabin to sit and think.
“There’s no TV, there’s no internet, it’s just you,” she tells him.
“Do they have forks?” he wonders. “Because I may need to stab myself in the face.”
Still, off he goes, arriving well after dark at the cabin only to discover that it’s occupied. Iris’ sister Hannah (Rosemarie DeWitt) is there, feeling blue after breaking up with her girlfriend of seven years. Awkward chit-chat ensues, then an agreement to share the house for the evening, and then she breaks out the tequila.