"The island in the middle of the lake, that potion filled with despair..." Wizet's expression shifted slightly as he realized something. "Voldemort wanted Barty Crouch Jr. to drink all of that potion?"
"Yes." Dumbledore nodded slowly. "Barty Crouch Jr. called himself Voldemort's 'most loyal servant.' He accepted the potion with almost fanatical fervor, without the slightest hesitation."
"Fortunately, you helped me back then..." He looked at Wizet, gratitude showing in his eyes. "If you hadn't prepared an antidote for me, I would have had to endure that kind of suffering as well."
"From Barty Crouch Jr.'s memories, I could sense just how dreadful that potion was. Especially for people like Barty Crouch Jr., or myself..."
"In the midst of despair, we had to relive all those painful events from the past without reservation... or rather, in an even more intensified form, perhaps several times over."
"Even so, Barty Crouch Jr. was still..." Wizet frowned slightly and asked in some confusion, "so loyal to Voldemort?"
Dumbledore blinked, his eyes glinting with thought. "If he had merely drunk the original potion—the potion filled with despair—I believe he would have been."
"It was as though he had already grown accustomed to dwelling in darkness. A deeper darkness might have meant nothing to him at all."
Wizet caught something in Dumbledore's words, and his eyes suddenly lit up. "So there was some kind of turning point?"
"Yes, a most remarkable turning point." A gentle smile appeared on Dumbledore's face. "And it came from you."
"From me?" Wizet's brows first drew together, then gradually relaxed.
After thinking for a moment, he looked up, understanding coloring his voice. "Was it because of Voldemort's Magical Contract?"
To hide the Horcrux in the cave, Voldemort had set numerous traps around it, intending to use those carefully arranged traps