"Yukki. It's like I said before. You have to suspect [i]everyone[/i]." Light explained. "The real Bernkastel isn't so trusting with revealing her identity, and I'm willing to bet a big sum of my credibility that the KTF is under suspicion for having..Kira among us. Just like anyone else involved in this case would be." Light said. 

"It all adds up when you stop and think about it. The Bernkastel we've seen today is probably her partner. She claims that, however, SHE has a double." Light explained. "However, this makes no sense. Bernkastel would then have no way to keep her identity a secret, It'd be physically impossible without any outside help. So, naturally the conclusion we draw from this is simple is quite simple." Light said.

The Bernkastel we met, who is probably in actuality the real Bernkastel's partner, is playing as the real Bernkastel. Her "double" is the real Bernkastel, who is most likely living as a normal citizen under an assumed name. Remember my cover story, that the "real" Light Yagami was doing some extra investigating on his own? this is most likely what the real Bernkastel is doing." Light explained.

"I drew initial conclusions while we were there, but here's what I think now:

1. the real Bernkastel is currently using a cover as a citizen of Sakurami City to investigate.

2. the real Bernkastel is someone we've met before, someone who I think is highly suspicious." Light explained. "So, everyone..that means there's just one person. One highly suspicious person we haven't accounted for yet. Someone who's seemingly involved in the case to a small degree, someone who seemed normal at first glance, but..isn't." Light smirked. "Come on. Just one person. Who do we think that is? remember, if you take into account my first conclusion, it could only be one person.."