Sinise will play Dr. Robert Ellman, who Netflix describes as a “a compassionate, incisive, no-nonsense adolescent and family therapist who works to help Clay Jensen (Dylan Minnette) battle anxiety, depression, and grief. Ellman helps guide Clay to accept the help he needs and come to terms with the trauma in his past.”
Season 4 is currently in production and will feature the core cast’s graduation from Liberty high. A premiere date has not yet been set.
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In the mean time, the third season is set to launch on Aug. 23, and will center on the surprising death of another high school student at Liberty: Justin Prentice’s jock Bryce Walker. You can watch the trailer here.