Eve, Levi and the rest of the search party explore a mysterious fort that raises more questions than answers.

With the help of a new ally, Gavin and Izzy embark on a dangerous and unauthorized mission to save their family despite government warnings that they could cause unprecedented disaster.

Air Date: Tuesday, Oct. 26 (09:00PM – 10:00PM) on NBC.

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LA BREA -- "The Fort" Episode 105 -- Pictured: (l-r) Eoin Macken as Gavin Harris, Zyra Gorecki as Izzy Harris, Ming-Zhu Hii as Aldridge -- (Photo by: Sarah Enticknap/NBC)