There was a movie I saw ages ago as a kid and am trying to recall the name. What I remember was
it was set in australia where these kids kidnap some bad guys. I think the bad guys were dressed up as santa. Anyway the kids captured these guys and then these guys suddenly "disappear". I think they end up being locked up in the kids science classroom or something. Does this ring a bell with anyone? The only other thing I remember is that it's an american movie and I think has a PG rating.