"I've got something to say! She's evil!" Twilight pointed an accusatory hoof at Cadance.
Everypony froze.
"Are you sure?" Celestia asked. "I trust you, of course, but this is quite the accusation."
Twilight nodded. "I'm sure."
"But... but... I'm not... I can't be evil!" Cadance broke down into tears. "What's happening? Why is she doing this to me?"
"Don't worry." Celestia gave a calm smile. "I have a simple spell that should clear up any misunderstandings. It reveals lies and deceptions."
Cadance's eyes went open wide. She grimaced.
"All you need to do is pass this little test, and then we can all find out what the misunderstanding was." Celestia's horn glowed.
"Wait! I'm–"
A beam of golden magic hit Cadance, ripping away her disguise and leaving a black changeling queen in her place.
Everypony stared at her.
"Aha!" Twilight shouted.