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PhDead is the third episode of the eighth season of Castle, and the one hundred fifty-fourth episode overall.
Starring: Nathan Fillion (Richard Castle), Stana Katic (Detective Kate Beckett), Susan Sullivan (Martha Rogers), Jon Huertas (Detective Javier Esposito), Seamus Dever (Detective Kevin Ryan), Tamala Jones (M.E. Lanie Parish), Molly C. Quinn (Alexis Castle), Toks Olagundoye (Hayley Shipton (credit only))
Guest Starring: Kelly Rowan (Carla Feller), Sunkrish Bala (Vikram Singh), Geoff Pierson (Michael Smith), Christine Adams (Dr. Barbara Lillstrom) Madeleine Coghlan (Emily), Justin Prentice (Scott Powell), Brett Wyman (Frat Boy Dressed as Frankenstein's Monster)
Uncredited: Aubrey Plaza (Lucy (voice))