Dupont Circle is magnet for young interns like Chandra Levy.(The Orlando Sentinel)

WASHINGTON _ Steve Maguire, co-owner of Dupont Circle's trendy Gazuza nightclub, has been trying for months to entice customers to Happy Hour.

"Four-thirty, it's empty. Five-thirty, it's empty. Six-thirty, a few people trickle in. Seven-thirty, you can't move inside the place," said Maguire, as he sipped a vanilla frappucino on the outdoor patio of one of the two Starbucks within a block of his bar.

"There's none of this 4:30 and you're outta here attitude in DC."

Maguire, a fashion statement dressed in tight blue jeans, fluorescent orange shoes and chic yellow-tinted glasses, knows why.

"The city is full of movers and shakers and workaholics. They come here to be the best in their field and then they leave."

It's the mantra of Dupont Circle and its 20-something inhabitants such as missing intern Chandra Levy: Work hard. Play hard.

Levy disappeared April 30, leaving behind broken-hearted and suspicious parents, a congressman besieged by scandal and a police force searching endlessly for clues.

In the weeks since, police have searched 243 vacant buildings in the Dupont …