At least there wasn't some boy at the top of the list of suspects, but Kate's description wasn't exactly holding a charge. Tony did try, only to grasp at nothing and frown apologetically. He knew a lot of dark haired girls and about a third of their names on a good day, and the only ones he remembered from that party had lived with him at one point or another. Besides, none of this information made the girl sound like she had some secret problem she needed Cassie to help her solve, unless she made a particularly sinister presence at Tony's party, so Tony encouraged Kate to go on with a twist of his hand. Cassie's social calendar was really the only clue they had. "Do you know if they saw each other last week?" he asked. Maybe they could establish a timeline and get themselves a few more witnesses to interrogate.