Continuity mistake: When Johnny, the health inspector and the men in bio-suits return to the school, there are four men in bio-suits. The inspector gives three of them orders on where to search for clues and the fourth one seems to have magically vanished.
Continuity mistake: Why does Johnny have trouble getting into the booby trapped room? He shouldn't, as it was made clear in the previous episodes that he can freely explore the scenes in his visions and see things the person or object touched did not. Why is he suddenly limited in this episode and never once previously, and never again in the series?
Chosen answer: Unreasonable Doubt aired as the fifth episode, on July 14 2002, with Netherworld airing as the eighth episode on August 4th. One possible explanation is that the networks are sometimes known to air episodes out of their actual production order. In cases like this, the DVD release usually uses the production order, thus placing the episodes in the order which they were intended to be watched.
Tailkinker ★