Big Frank makes a reference to having worked in Tent City, which he describes as a 'hellhole'. Tent City was an outdoor jail complex in Phoenix, Arizona, that was closed in 2017.
When Sasha is exploring the Lefevre house, a book can be seen on a side table, "The Unknown Reality" by Jane Roberts. Jane Roberts is a widely read spiritual medium who published a series of books describing the thoughts of an energy entity she called Seth.
Sasha is prescribed an SSRI Fluoxetine which the doctor incorrectly describes as an "anti-anxiety benzo (benzodiazepine)"
Uma Thurman plays Nicholas Galitzine's mother in this series. She later plays Nicholas Galitzine's character Prince Henry's boyfriend's mother President Ellen Claremont in the 2023 film Red White and Royal Blue.
When Sasha cuts out the recent scar on her palm, she cleans the wound with nail polish remover; not alcohol or peroxide.