Continuity mistake: When the children are getting ready to go to the movies and are waiting for the bus, Truck's fingers are in a cast from breaking/spraining his fingers during his fight with Tony. However after the movie, when they're getting back on the bus the cast is gone and his fingers are fine.
Escape to Witch Mountain (1975)
Ending / spoiler
Directed by: John Hough
Starring: Donald Pleasence, Eddie Albert, Ray Milland, Kim Richards
The kids are aliens from another world. They find the others who turn Bolt's helicopter upside down and he and Deranian give up on catching the kids. Tia and Tony give Winky the cat to Jason who says he wants to remember them as the kids he never had.
MissNiece
More mistakes in Escape to Witch Mountain
Jason O'Day: Ahhhh...so that's it. You're nothing but a conniving pair of undersized land pirates.