Anna and Kevin were in the building Zoey had kept Cas hostage. It was sealed and trespassing would be penalized, but human laws didn’t exactly apply to the angel and the prophet.
“You have the tablets” Anna concluded.
“Not all of them” Kevin corrected her. “Just the most valuable once”
“I have to say you’re quite of an actor” Anna said, with some admiration in her voice.
“It wasn’t all acting” Kevin replied. “In the beginning I thought Crowley really meant the best for me. I believed him when he said he was looking out for my mother. But then I wanted to see her again and he arranged that”
“How did that change your mind?” Anna asked.
“The woman I saw wasn’t my mother. She looked like my mother, she sounded like my mother, but I knew she wasn’t my mother. She’s dead. Crowley killed her. Or his demons did it for him” Kevin explained.
“I’m sorry to hear that, Kevin” Anna said soft and remorseful. “But I’m glad to know you’ve set your priorities straight”
“Do you still want me to give up the angel powers?” Kevin wanted to know.
“No” Anna answered serious. “When Crowley finds out you double crossed him, he will end you. The more power you have, the better. In the meantime you have to keep pretending you’re still his ally. I know it’s risky and I understand if you want out, but-”
“I’ll do it” Kevin interrupted the angel. “I’ll stay close to Crowley and report to you whenever I can. But you have to keep in mind that if you’re planning on destroying Crowley, you better act fast. Because as soon as he claims the powers Castiel promised him, he’ll be undefeatable”
“Duly noted” Anna responded.