Topics and Guests: July 23

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• Join Greta for a special preview of the Democratic National Convention (search) — LIVE from Boston.

The party is just getting started, and we'll get a sneak peak at what to expect from DNC Chairman Terry McAuliffe.

Security will be a major concern during this convention, the first national political convention since the September 11 (search) attacks. Is the city prepared for the worst-case scenario? Boston Police Commissioner Kathleen O'Toole goes on the record.

• We may be in Boston, but we'll still be following the news wherever it breaks.

The desperate search for Lori Kay Hacking (search) continues in Salt Lake City. Some new bizarre details about Hacking's husband have many asking questions, we'll get answers and an update on the search from Detective Dwayne Baird.

Hacking's in-laws and family held a press conference this morning to make another plea for help in the search. They have also set up a Web site to help FIND LORI.

These stories and much more...

Don't miss "On the Record" tonight at 10 p.m. ET.