The action-adventure snares $20.2 million in its third straight week at No. 1.

NICOLAS CAGE's 'National Treasure: Book of Secrets' struck gold yet again, finishing in first place at the box office for the third week in a row, taking in $20.2 million.

The sequel to 2004's blockbuster finds Nic rebrandishing his trusty torch as treasure hunter Benjamin Franklin Gates, who must this time track down some long-lost pages from ABRAHAM LINCOLN assassin JOHN WILKES BOOTH's diary. The JERRY BRUCKHEIMER-produced action-adventure co-stars DIANE KRUGER, ED HARRIS, JON VOIGHT and HARVEY KEITEL.

'I Am Legend' rose a spot to reclaim second place, making another $16.3 million. In the big-budget zombie-fest, WILL SMITH fights for survival as the lone human surivor of a worldwide, mutant-brewing plague.

The critically acclaimed dramedy 'Juno' bounded back to third place (from fifth), taking in $16.2 million, while 'Alvin and the Chipmunks' dropped a couple octaves down to fourth, drawing $16 million.

The cell-phone scare-flick 'One Missed Call' debuted in fifth place, dialing up $13.5 million.