Tom Clarke (Ryan Hurst) is the only human character to last throughout the entire series.
Tom Clarke (Ryan Hurst) and John (Eric Close) are the only characters to appear in both this installment and the first, "Beyond the Sky".
Dakota Fanning (Allie Keys) is the only one whose name appears in the opening credits of all ten episodes.
When Allie is walking with John (in alien form), they appear to be holding hands. But if you look closely, you can see their hands aren't in contact.
This episode marks the final appearance of Colonel Owen Crawford (Joel Gretsch) on the series.
When Mary begins to run to the UFO, you see a soldier bend to shoot and then she runs in slow motion. The soldier bends down again, then the soldier bends down a third time when he's told to.
This episode marks the death of Eric Crawford (Andy Powers). Of the three major characters from the second generation, the others being Jacob Clarke and Jesse Keys, he was the last survivor.
This episode and the last three episode of the series all take place in December 2002.
This episode introduces physically Allie Keys, although the audience is familiar to Allie Keys because she is the narrator of the series.
1) While Charlie and Lisa are talking at the soccer field, the umbrella strap keeps disappearing and re-appearing between camera shots.
2) When Lisa is fixing dinner at home, and Charlie is looking at Allie's posters, the alien head tattoo Lisa has on her back shoulder has disappeared, even though it was visible in an early shot in the episode.
1) Just before the therapy session where Charlie and Lisa tell everyone about Allie, there's an establishing shot of the building. You can clearly see Allie running in through the doors, even though at this point she's still at football practice. They must have reused the shot.
2) When Allie goes to heal Charlie, Dr. Penzler gets up twice; once as Lisa starts towards them, and again as she kneels beside them.
This is the first episode of the series not to feature any members of the first generation.
This episode marks the deaths of Jacob Clarke (Chad Donella) and Jesse Keys (Desmond Harrington).
This episode takes place in 1980, 1981, 1986, 1992, 1993 and 1996.
The first scene of this episode takes place betweem May 1970 and November 1980.
This episode marks the death of Sally Clarke (Catherine Dent). Of the three original major characters, the others being Colonel Owen Crawford and Russell Keys, she is the last survivor.
In the episode, the daughter is seen whining about wanting her packed up Cabbage Patch Dolls. At the time of the episode, Cabbage Patch Dolls were not available.
This episode marks the deaths of Colonel Owen Crawford (Joel Gretsch), his son, Sam Crawford (Ryan Merriman) and the birth of his granddaughter, Mary Crawford.
This episode takes places between April and May 1970.