The red rose (and the Corey-Vogel relationship)
In the night club, a girl gives Corey a red rose. Then he speaks with the jewel businessman (who is a traitor, of course).
Later when he is at home and says goodbye to Vogel before he's going to meet with Mattei, the rose is by Vogel. He took it home and gave it to him? Hm... interesting, very interesting. Why? Bringing someone a red rose is a strong symbol...