Mc Cord was cast because, according to Sachs, "she's someone who is worldly, and there's a sophistication to her that's interesting." Sachs and Judah had seen Grimes' work before and knew "she had the acting chops", and she was cast after acting a dramatic scene which she "just killed".Sachs stated, "she can act, she's beautiful, and she can give this sweet cuteness [that lets us see] through her eyes into this world." Lori Loughlin auditioned for the role of Debbie and was given the part immediately.
The producers were fans of Jessica Walter after watching her film Play Misty for Me.
The family relocated in order to care for Harry's mother Tabitha (Jessica Walter).
Sachs found Milligan to be "really funny", and changed Ethan to better represent his personality.
Sachs explained that Jessica Stroup "came in dressed for the part, artsy and quirky, and she had her hair up and she had a bandana.
She nailed it." The producers were fans of Tristan Wilds for his acting on The Wire, and hoped to hire him as Dixon from the start of casting.
When that photo is sent throughout her school by Naomi, Annie has a resentment against Mark, but then forgives him.