Get a Clue

Plot
The episode opens up with Kacvinsky talking on the film set with Sydney. They are talking about how Ian got eliminated. He figures Ian voted Justin with Nupur, which meant one extra person (aside from Caelan, Justin and Serena) has to have voted Ian, which leaves Lizzie. He is shocked that Lizzie would betray the alliance like that, but Sydney says that have to make sure before they do anything rash. Lizzie and Nupur are sitting in the girl's trailer, and Lizzie reveals to Nupur that she in fact voted for Ian. Nupur says she won't tell Kacvinsky, but immediately turns and tells him to try and secure a spot in a final three alliance. With the confirmation, Kacvinsky, Nupur and Sydney form an unofficial final three alliance, and talk about how they can't believe there are four left from their initial alliance of eleven. In the meantime, Caelan, Serena and Justin are sitting in the craft services tent, and they are also talking about having a final three alliance.

Caelan (CONF): Perfect, I could easily beat Serena or Justin in a jury vote, let's just hope everything goes according to plan

That leaves Lizzie as the only one without an alliance, essentially making her the swing vote between the two. Kacvinsky later confronts her about voting off Ian, and Lizzie argues he would do the same in the future. He ignores that and asks her if she is going to stick with the victory alliance until the final four, but Lizzie is unsure. Caelan is well aware of the victory alliance still, and later confronts Lizzie, asking her to switch to their alliance since she could beat any of them in a jury vote easier than she could beat Nupur, Sydney and Kacvinsky. In the midst of all this confusion, night begins to fall and the contestants still have no sign of a challenge. Finally, once it's dark, Chris calls the contestants to the train station set.

Chris tells them the train will take them to their challenge. The train is packed with people, and while the contestants are riding the train, they are given a feast. Suddenly, the lights on the train begin to flicker. The other passengers seem startled, which makes the remaining contestants nervous. A scream is heard and the lights jerk back on. A body is lying directly in the center of the train car. The girls scream and Justin almost passes out. Caelan says this has got to be some kind of prank, and Kacvinsky half-heartedly agrees. Sydney decides they should outline the body, like in murder movies, just so they know it in case the body runs away. As Sydney begins to outline the body, Serena sarcastically remarks that the body isn't going to get up and just walk away. Suddenly, the lights turn off for a second time, causing the packed train car to scream again. This time, when the lights flash back on, two more bodies are lying on the ground and the first one that was there is gone. The skeptical Caelan is scared now as well, and everyone else is in a huddle. Kacvinsky notices something lying by the body and it is a napkin. On it are fingerprints, cheesy finger prints. Noting one of the items on the buffet they were served when they were first on the train was cheese puffs, Kacvinsky concludes someone in the car right now is the killer. Right as he announces that the lights black out for a third time. This time, when they come back on, another body is on the ground and the previous two have disappeared.

Sydney (CONF): Chris isn't crazy enough to actually kill people...right?

After another brief period of fear and sleuthing, the lights black out for a fourth time. This time, when they flash back on, everyone is gone except for the remaining contestants.

Serena (CONF): I wasn't sure if this was a challenge, or some kind of sick psycho killer. It's not like it hasn't happened before

Nupur argues that Chris wouldn't let an actual killer loose on them, but Lizzie reminds her that during the Halloween challenge there was an actual killer and it wasn't part of the challenge. Sydney argues that the killer must be one of them, since it seemingly wants to isolate the contestants. Caelan states she's being ridiculous, but some of the other contestants begin to agree with her. Everyone had eaten cheese puffs except for Kacvinsky and Sydney, leaving them the only two truly clear unless they framed someone. Eventually, the contestants conclude they have to stop the train incase something is happening. There is a hatch on the floor. Nupur goes to open it, and sees the tracks speeding beneath her. She suggests they toss something down that lodges the wheels, causing the train to stop. The contestants begin to look for something to stop the train.

In the meantime, Sydney is still trying to figure out the murderer. She concludes it's Caelan, because he hasn't been very nice during the game. The other contestants begin to agree, when Caelan argues that they are being ridiculous, and this is obviously Chris just messing with them all. Caelan's argument is bolstered when a hair is found by the first crime scene that is darker colored, ruling out Caelan from the possible killers, leaving Lizzie, Justin, Serena and Nupur. The four argue that none of them would kill anyone, and Serena tells Sydney she is being ridiculous for falling for Chris's tricks. Suddenly, a final clue is found, since there is a small piece of lettuce by the other body, and Serena had been the only one to eat salad. The contestants all back up Sydney, and Serena is arguing, saying that no one is dead and that they are all being ridiculous. Suddenly, Chris drops down from the ceiling, with the three "dead" bodies, which were actually just fake dummies, kind of like them. He tells them their challenge was to solve the mystery and Sydney was the first one to successfully do so, meaning Sydney wins immunity.

All of the contestants except Serena cheer for Sydney, as Serena states she knew it all along and no one believed her. That evening during dinner, talk about elimination was intense, especially since for the first time, only one contestant was immune. Serena walks up to Kacvinsky and Nupur, and tells them that they would have a much better chance against a jury with her than with Lizzie. Kacvinsky and Nupur tell them they will definitely think about that. In the meantime, Caelan, Justin and Serena are plotting against Lizzie, their biggest target. Kacvinsky and Nupur continue to talk, wondering if they should vote against Lizzie, or join Sydney and Lizzie in voting Serena. They figure that together, they will be the swing vote deciding who goes home. At the Gilded Chris ceremony, everyone puts in their votes. Once the results are in, Chef walks out with a tray full of gilded Chris awards. He tosses the first one to Sydney, since she was immune.

Vote (Sydney): Don't think I forgot about what happened in Scotland *clicks Serena's name on the electronic voting device*

He then throws the next two to Kacvinsky and Caelan.

Vote (Caelan): You've made it far enough, what have you done besides be in an alliance? *clicks Lizzie's name on the electronic voting device*

He throws a fourth to Nupur and a fifth to Justin leaving Serena and Lizzie as the bottom two.

Vote (Justin): Who am I voting for? Easy, goodbye Lizzie *clicks Lizzie's name on the electronic voting device*

He tells the contestants that the person who will be staying in the game is...

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..........................................................................Lizzie. Lizzie sighs with relief and Serena is in disbelief. She angrily takes the walk of shame. Chris congratulates the final six for making it that far, and wishes them luck as the end approaches.