In the Chung interview, Condit said Chandra was interested in working for the CIA or FBI. Was she aware of such techniques and left a drop to herself? Maybe Condit even told her how to do it. It would go along with his other cloak-and-dagger stuff.
At any rate, someone would have to check her mail for a few days to make sure all was clear. This would require the use of her keys. The missing keys.
It would be nice to know if she got her mail in her apartment, or a common mail area with a separate mailbox key.
Law enforcement did not find out til mid-june that Carolyn was in town, until Condit's original lawyer, Joseph Cotchett revealed it, when he noted that Chandra couldn't have been at Condit's apartment that week unless she was on the sofa, because Carolyn was there.
That was the first the cops heard about Carolyn's visit to Washington. This brought two dramatic events into action. Cotchett within a week resigned, and the police began negotiating for Carolyn to fly back to D.C. to do an interview.
Why wouldn't Condit want Carolyn to vouch for his whereabouts? Think about it from the police point of view. Chandra vanishes sometime after 1PM, and Condit as far as they knew was home alone with nobody to verify if he went out with Chandra on a date that evening, or stayed home.
It has to raise Condit on the suspect scale that he had no alibi witness for the evening of May 1st. Yet Condit doesn't give it to them. He doesn't say to the cops, even lying about the nature of his relationship... "I was mentoring Chandra, blah, blah, blah... I didn't even talk to her the last week. Too busy with work, my wife was in town and we were busy together shopping, eating out, etc."
Carolyn needs a second interview I think.