Aidan gets cornered by the "monster hunters" due to a railing. The railing disappears between shots to allow him to fall off the platform.
Rick claims he saw Aidan carry C.J. off to the old power plant. However, the camera is stationary and points toward the ocean, so Rick wouldn't have been able to see which direction Aidan went.
Cody proposes to C.J. at the end, but she doesn't give an answer and she doesn't appear again in the remainder of the series.