When Iris (Naomi Watts) visits Walter's (Bill Murray) book publisher, some of Sigrid Nunez's other published books are visible upon the publisher's office desk.
Sigrid Nunez has stated that she is pleased with how her book is presented in this film adaptation.
Sigrid Nunez has stated that Apollo, the Great Dane, is a fictional character in her novel, and not based upon any actual dog in real life.
Sigrid Nunez, the novelist, has stated that the film producers offered her a cameo role as one of the dinner table guests (scene at beginning of story), but she respectfully declined their cordial offer.
Bill Murray and Naomi Watts previously starred together in St Vincent, ten years prior