Sacrifice

Sacrifice is the tenth episode and the season finale of Rebel Knights. It marks the final episode for Paris Berelc, who play Molly Costello.

Plot
In the season finale, things come to a head when John Collins is revealed to be a traitor and an ally to Lord Dreylock and Molly to be dying from the poison. The Knights becomes aware of shocking secrets behind the invasion. The newly-inaugurated president eliminated the Earth Defense Force Act, paving the way for Dreylock and his army to invade Earth. The knights attempts to hold Collins hostage but he manages to escape, headbutting Zoe in the process. Violet is captured and Collins demands that all of the Knights turn themselves in to Lord Dreylock in an exchange for him ending the invasion and leaving Earth. Grover isn't buying the deal, knowing that Dreylock isn't trustworthy. Collins said that his daughter is being held captive by Dreylock and he made a deal with him to either kills the Rebel Knights or turn them in exchange for his daughter's freedom. Overhearing the conversation, Natalie does research on Collins' daughter, only to learn that he doesn't have a daughter nor any family. She writes the information down on paper and puts it in Zoe's jacket. Backin the hallway, Grover agrees to Collins' demands and every knight, minus Natalie surrender to Collins, with him hold a gun to Violet. Grover reminds Collins that if he tries anything funny, he will "Fucking Kill You!" As they headed to Dreylock's base, Molly and Cleo talk about what will happen next. Molly is uncertain was what the outcome is. Cleo notices that her sister looked awful. Molly sarcastically stated that she just had poison injected into her by Dreylock's spy. Cleo laughs, then questions if the knights are going to die. Molly holds her sister's hand, promising that she won't let anything happen to her little sister. The knights arrive outside of Dreylock's base. The finally meet Dreylock face to face. Then show Grover his hostage, Mary, Grover's sister. He wanted Mary to witness her brother's demise, along with the rest of the knights. Zoe feels a paper in her pocket and pulls it out. She reads it and her eyes grew large. She tells Grover that Collins doesn't have any family let alone a daughter. Grover quickly realizes that Collins is Dreylock's spy. Collins gloats to the knights on what happens when you make a deal with traitors. Dreylock's Tronics force the knights to their knees for a public on-camera execution. Grover screams NOW!!! Then the fight begins. All the knights shoot down the Tronics. Dreylock orders Drekel to take Mary back to her jail cell and Dreylock watches from the sidelines as the knights fight the Tronics. Despite dying from the poisoning, Molly fights bravely against Collins, until Cleo intervenes. The knights are joined together. Erupting in rage, Dreylock points his pistol at Cleo. Molly sees what is happening and runs to her sister. Dreylock fires the pistol and hits Molly, who pushes her sister out of the way. The knights look on and runs to the Costello sisters' side. Cleo rises to her feet and goes to her mortally wounded sister. Dreylock tells the knights that they have not seen the last of him and he and his base are transported away. Cleo is in tears as Molly tells her that the wound doesn't hurt. This makes Cleo realize that Molly's wound was severe. The knights gather round the sisters. Knowing that she is dying, Molly tells Cleo to keep fighting and don't stop. The knights cannot let Dreylock win as the are Rebel Knights. She also asks her to tell their parents on what happened to her if she will ever see them again. Cleo tells her that she will. Molly gives her necklace to her sister as a memento. After exchanging their last "I Love You's" to each other, Molly whispers "That's My Baby Sister!" and dies in Cleo's arms. Cleo cries and cradles her sister's body as the Knights comfort her. Zoe is seen in tears as her friend and fellow cheerleading teammate dies. Grover whispers "We're gonna miss you, Molly". The knights grieve for Molly. Back at his base, Dreylock questioned on where Collins came from since he ordered every adult resident in Santo Domingo off the planet except the town mayor. But he knew that Collins was sent by someone who also wants to destroy the Rebel Knights, meaning Dreylock and his army may have a human ally with the same interest in defeating the knights. However, Dreylock is more interested in finishing off the Rebel Knights, even though they lost one of their own. He knew that they will be back and he will be waiting for them as he knows that the battle between the both of them isn't over.

Starring

 * Leo Howard as Grover Jones
 * Liza Koshy as Violet Adams
 * Adam Hicks as Diesel Turner
 * Aislinn Paul as Natalie Callaway
 * Meghan Rienks as Zoe Parker
 * Melvin Gregg as LaShawn Devereux
 * Tyler Chase as Barrett McIntyre
 * Paris Berelc as Molly Costello
 * Rowan Blanchard as Cleo Costello

Guest Starring

 * Mary Mouser as Mary Jones
 * Chad Michael Collins as John Collins

Trivia

 * This episode marks the deaths of Rebel Knight Molly Costello and spy John Collins.
 * Paris Berelc joined the cast of the Netflix series, Alexa & Katie, which led to her sudden departure from Rebel Knights.