You might pity the plight of Michael Jackson's personal physician, Conrad Murray. There he was in the weeks after the King of Pop's death, dutifully making himself available to investigators and answering questions. Then all of a sudden, the po-po with whom he thought he was cooperating come barging in with a search warrant.

But noted Houston criminal defense attorney Dan Cogdell says that's not an unusual experience for folks who are at the center of criminal probes. "Often, ‘people of interest' feel that cooperating with investigators will prevent a raid, but that is simply not the case," says Cogdell, who has represented numerous high-profile clients subjected to similar searches. "Law enforcement agencies don't have to tell you in advance what they are going to do, and can basically lie to you about their intentions in many cases. People often find out that while they are operating in good faith, that isn't always reciprocal." To interview Mr. Cogdell about high-profile criminal cases, contact Alan Bentrup at 800-559-4534 or alan@androvett.com.