Mail Spam Folder acting wierd.

My main email account's Mail Application Spam Folder all of a sudden is not allowing me to actually see any of the emails in it but the number counter display is reading they are in there.

Also odd is my other email account's spam folder is acting normal.

Anyone have any suggestion that doesn't require me deleting my preferences and re setting up all my rules and folders?

Thanks,

Robert

P.S. I should add an arrow showed up next to the main email account's SPAM folder but when I click it nothing happens as one would expect from such an arrow next to such an email folder.