Arguing
That stupid cat behaved like this ever since Jennifer was pregnant, and she was not even around during the night. Then Jennifer came home. Jennifer got really mad at Julian for confronting Eve like this, she could not believe that he was accusing her best friend of being a threat to Lily. Jennifer gave Julian an ultimatum, either figure it out quickly or get rid of Luna.
Julian realized that very moment that Eve had said something that would give him all of the answers he needed. Luna reacted the same way at night. There was something beyond the He had never reviewed the night footage, but now he definitely will. Julian started up the software, he gasped when he realized that every single night the recordings were wiped off the hard drive.