The lawyer for Robert Joe Haldeman,  the blackmailer accusing of extorting David Letterman says the gap toothed funny man's not telling the full story!

"Here's a guy who is an Emmy Award winning journalist, who has dealt with cops and wiretaps and undercover investigations virtually his entire life,"  Haldeman's defense attorney Gerald Shargel said today.

Shargel alleged that Letterman wasn't telling the whole story in last week's confessional that he was being blackmailed.

Cops say 48 Hours Mystery producer Haldeman offered to "sell" Letterman a "screenplay treatment" about the comedian's affairs with Late Show staffers including Dave and Haldeman ex Stephanie Birkitt.

In a sting operation, Halderman was busted depositing a check "designed to bounce" at his local bank, prosecutors said.

"There was a $2 million check," Shargel explained further.

"In the history of extortion, I don't think there's been a single case where the alleged extortionist took a check in payment.

"It just doesn't make any sense."