7.9/1014 votes#1 - The Final Frontier
Season 5 Episode 6 - Aired 11/5/2012
When a body is found at a sci-fi convention, Castle and Beckett are warped into the heart of fandom -- a world of egotistic celebrities, diehard costumed fans and enough drama for two galaxies.
Director: Jonathan Frakes
Writer: Kate Sargeant
7.6/1014 votes#2 - Once Upon a Crime
Season 4 Episode 17 - Aired 2/27/2012
When a woman dressed as Red Riding Hood is found dead in the woods with claw marks covering her body, and soon after a murdered Snow White is discovered with a poison apple in her hand, Castle & Beckett find themselves on a Grimm hunt to catch a fairytale killer before he kills again. But nothing is as it seems in a case filled with deceit, betrayal, secrets and murder
Director: Jeff Bleckner
Writer: Kate Sargeant
7.5/102 votes#3 - Payback (II)
Season 1 Episode 17 - Aired 2/28/2023
Garza and the team are on the hunt for a ruthless gang leader on a mission for revenge. Atlas comes to town to reconnect with Laura, but the two cannot seem to see eye-to-eye, and Simone and Carter grapple with letting go of old grudges. The crossover starts on The Rookie S05E17 The Enemy Within (I).
Director: Robert Bella
Writer: Kate Sargeant
7.3/1019 votes#4 - The Mistress Always Spanks Twice
Season 2 Episode 16 - Aired 3/8/2010
When a half-naked woman is found covered in caramel sauce and hanging by bondage cuffs in a public park, Castle and Beckett's investigation takes them into New York's underground world of sexual domination. Naturally the case serves as sexy fodder for their already charged relationship banter.
Director: Rob Bowman
Writer: Kate Sargeant
5.6/108 votes#5 - Screech, Thwack, Pow
Season 4 Episode 8 - Aired 12/7/2018
Remi races against the ever-worsening ZIP poisoning to enact her ultimate plan.
Director: David S. Tuttman
Writer: Kate Sargeant
5.6/108 votes#6 - The Big Blast from the Past Episode
Season 4 Episode 14 - Aired 3/8/2019
An active bomber forces the team to delve into a case from their past.
Director: Kristin Windell
Writer: Kate Sargeant
5.4/107 votes#7 - Everybody Hates Kathy
Season 4 Episode 19 - Aired 4/19/2019
The team discovers an international conspiracy when a deadly weapon is stolen, Jane supports Weller when someone from his past dredges up painful memories, and Patterson and Rich contend with their newly released hacker accomplice.
Director: David McWhirter
Writer: Kate Sargeant
Popular searches:
The Best Episodes Written By Kate Sargeant
Every TV Episode Written by Kate Sargeant Ranked from Best to Worst by Thousands of Voters
Kate Sargeant Ratings Summary
"The Final Frontier" is the best rated episode written by Kate Sargeant. It scored 7.9/10 based on 14 votes. It was directed by Jonathan Frakes. It aired on 11/5/2012 and is rated 0.3 points higher than their second-best episode, "Once Upon a Crime".