Goofs

Sen. Wilton has a US flag and a District of Columbia flag in his office. Since he represents Missouri (not DC), he would have a Missouri flag, not DC.

When Artie and Mrs. Fredrick see that Claudia has strong instincts for artifacts, Mrs. Fredrick says that they must keep their eyes on her (Claudia). They, In fact, didn't keep up with Claudia at all as she was in foster care, an institution and spent one winter on the Minneapolis streets homeless.

For some remarkable reason, Cardboard, fake 'lockers' were implemented on a flanked side of a door where real lockers were.

Claudia and Artie went back in time using the Bronzed Baby Shoes Artifact. They watch Artie enter a school room where Claudia's sister was having a Linda Blair Exorcist moment in the air. To the right, real lockers are; to the left, fake lockers.

The real ones are shorter, with vents. Importantly, the doors are embedded in the flanking metal sides. The Fake ones, the doors are outside, over the side panels. The perforated cardboard cross-section is blatantly visible. They are a good foot higher than the real ones.

For no real reason why, there was no effort to conceal they used fake, cardboard lockers with real lockers in the same frame shot to mock them.

When the victims are laying on the floor "drowning" neither the victims, nor anyone near them, try to roll (them) onto their side so they don't choke to death, which is just common sense.