When Howie is climbing through a tunnel in a hoarder's house, he quotes John McClane from Die Hard (1988): [huddled in an air vent, recalling his wife's invitation] "Come out to the coast, we'll get together, have a few laughs..."
The hoarder's tale was inspired by the Collyer Brothers, who died in their brownstone under a pile of newspapers in Harlem, New York City, in 1947.
Athena talks about learning to be single at age 50. Angela Bassett was actually 60 when filming this.