Why you need to know about ''Veronica Mars''
THE DEAL The titular teenager (Kristen Bell, pictured with Enrico Colantoni, who plays her father) hunts down cheating husbands for her dad's detective agency.
WHAT IT'S LIKE ''Karen Sisco: The Early Years''
FUN FACT Show creator Rob Thomas should be able to get an invite to the set of HBO's ''Entourage.'' He dreamt up the short-lived Jeremy Piven series ''Cupid'' and wrote the 1999 Adam Grenier teen movie ''Drive Me Crazy.''
WHY YOU NEED TO KNOW IT Even if the show doesn't have the rock 'em, sock 'em action to hook male viewers or the soft edges needed to lure teen girls, adorable newcomer Bell is a keeper.
WILL WE WATCH? Almost definitely, especially if the WB's time-slot competition, ''One Tree Hill,'' is a rerun that week