When viewers first met Richard Castle, a famous mystery novelist, he was creatively blocked. But when the NYPD questioned him in connection with a series of murders staged to imitate crime scenes from his books, Castle found inspiration in NYPD Detective Kate Beckett. Once that initial case was solved, Castle and Beckett continued to investigate strange homicides in New York, combining Castle’s writer intuition and Beckett's creative detective work. In the Season 7 finale, Beckett was faced with a choice about her future. Now that she's been promoted to Captain, how will New York's famous couple adapt in Season 8?