: Just as the future is secured, the portal pulsates unexpectedly, snatching Josh , Riley , and Lilly away from 10,000 B.C. and transporting them to an unknown time (later revealed as 1988).
: Eve finally manages to get young Isaiah to the Topanga portal, sending him through to 1988. This ensures he grows up to become Gavin, effectively saving Josh and Izzy from fading out of existence. La Brea 1x10
, titled "Topanga," is the high-stakes season finale of the first season of the NBC sci-fi series. The episode serves as a massive turning point, resolving the mystery of Gavin's origins while scattering the main characters across different timelines. Key Plot Developments : Just as the future is secured, the
: In the modern day, Gavin, Izzy, and adult Lilly (Ella) locate a final, smaller sinkhole in Seattle. They take a literal leap of faith and successfully land in 10,000 B.C., where they are immediately greeted by a woolly mammoth. This ensures he grows up to become Gavin,
: During the struggle to rescue Isaiah from Silas, Marybeth is fatally stabbed. She dies in her son Lucas's arms just as they were finally reconciling their strained relationship.