La — Brea 1x5

In the fifth episode of La Brea , titled "The Fort," survivors uncover a mysterious, modern-feeling settlement in 10,000 B.C. while discovering that a fellow survivor, Lilly, was kidnapped by the adults she was traveling with. Meanwhile, in the present, Gavin discovers a letter from Eve revealing that the portal back to the modern day is closing in five days. For more details, visit NBC . A Recap of La Brea Season 1, Episode 5 - NBC