Nowhere Boys: Season 3, Episode 9

3 - 9: Two Moons Rising: The Truth Spell

The gang perform a truth spell on Ben 2 to ensure they can always tell the two Bens apart, but the spell backfires when Heath mixes up the words and our gang all have to tell the truth. They manage to reverse the spell, but when the parasite creatures attack them, Heath's forced to admit he can't read.