Avery Raskin

After their parents are killed in a terrible accident, the four McMurrin children live with their loving Aunt Martha. Martha wants to adopt the children but the town's bitter old banker stands in their way. However, the children's courage and ingenuity triumph and they become a family just before the holidays.

A passenger of a hijacked airliner who happens to be an airplane engineer works to deactivate a chemical weapons bomb after the hijackers kill the pilot and threaten to kill all the passengers on the plane.