In early August (2016), new ABC Entertainment president Channing Dungey was asked about the decision to cancel the long-running procedural show Castle after eight seasons
With their best lead in hand, Castle and Beckett are ready to take on LokSat. But an unforeseen twist puts their case - and their lives - in jeopardy.
Kate Beckett's investigation into her mother's death is reactivated when Hal Lockwood (guest star Max Martini, "The Unit") - a professional hitman with knowledge of Beckett's mother's murder - stages a spectacular escape during a court hearing. As police launch a manhunt for Lockwood, Castle and the team uncover evidence of a deeper conspiracy involving a mysterious figure with law enforcement connections who is linked to both Lockwood's escape and the killing of Johanna Beckett. The search for Lockwood and the quest to identify his co-conspirator leads to a shocking and deadly conclusion.
The investigation into the shocking death of a museum curator, crushed by a falling gargoyle, takes a bizarre turn when Castle and Beckett learn that he isn't the first member of a recent archeological expedition to die. It turns out there was a legend inscribed over the burial chamber the team unearthed warning that "all who gaze upon the face of the mummy are doomed."
The body of a young woman is found spinning inside the dryer in the laundry room of an upscale apartment building. When Castle and Beckett discover that the woman, in her 20s, worked as a Nanny in the building, their investigation leads them to a world of sex, lies and "playdates."
During the investigation of the murder of an Atlantic City casino owner at an abandoned warehouse, strong leads emerge for the team in both New York and Atlantic City. As Beckett and Capt. Gates work the New York leads together, Castle naturally chooses to join the detectives for the road trip to "America's Playground," hoping to help solve the case while throwing an impromptu bachelor party for Ryan.
After a movie star turned theater actor is mysteriously killed, Castle and Beckett go backstage and learn the star had more to worry about than just his lines.
When an up-and-coming rock star's dead body is found staged in a scene straight out of her hit music video, Castle and Beckett delve into the world of obsessed fans, sleazy managers and jealous band members. But it's only when Alexis uncovers the true meaning behind the lyrics of the final song that clues to the killer's identity begin to surface.
In the second part of the story begun in "Tick, Tick, Tick...," the serial killer remains at large and is taunting Castle, Beckett and Jordan Shaw (guest star Dana Delany) to catch him.
When Castle and Beckett wake up in bed, handcuffed together, in a locked room with no memory of how they got there, they must piece together the mystery of where they are and why, all while trying to escape. But as the two of them adjust to being shackled together, what's the biggest threat they face... the people who abducted them or each other? Meanwhile, Ryan, Esposito and Gates are left to investigate their disappearance in a case where all is not what it seems.