Avsnitt 20

Simon and Liz struggle through the dying jungle on their way back to the time barrier. Liz stops to catch her breath. Simon tries to coax her to move on. She reflects on whether Beth and her community will survive with the caves as their refuge from the heat. With Simon helping her to her feet, she wearily moves on. Suddenly on the ground, she is shocked to find a dead bird . Simon picks it up commenting on the fact that wild life is starting to die off.