Joey and Tristen looked at each other before running back to where Ishizu was, having thought that she was with them. Yami looked confused. "But wait, how would they have known that they were going here? How would they have known about them at all?" Tomb Keepers were not known by many, only few. 

Yugi's phone began to ring within a few minutes after Joey and Tristen went to find Ishizu.