Sunday night is the fifth season finale of "The Sopranos." (search) And only one thing is certain — somebody’s gonna get whacked.

Rumors are swirling that the latest victim is going to be Christopher Moltisanti — New Jersey crime boss Tony Soprano’s drug- and alcohol-addiction battling nephew.

“There’s a strong chance of that happening,” Michael Imperioli (search), the actor who plays Christopher and serves as a contributing writer on the popular HBO show, told "Fox and Friends" Tuesday morning. “Look at what happened last week.”

Almost two weeks ago, in the season’s penultimate episode, Christopher’s fiancée, Adriana (Drea de Matteo (search)), was whacked after she confessed to Christopher that she’d been snitching to the feds about the family.

After considering Adriana’s plea for him to join the witness protection program with her and leave mob life behind forever, Christopher instead told Tony what she’d done. Hours later, she was killed.

But Imperioli, who obviously wouldn't reveal much about the last episode, told Fox that anything could happen Sunday night.

“Things are not looking good for everybody out there. I mean, we’re all in trouble,” he said.

He has a point. Tony S.'s cousin “Tony B.” (Steve Buscemi) is another good candidate for whacking, after recently causing unnecessary trouble by killing two members of the Sopranos' rival New York family.

And some on “The Sopranos” Internet message boards have even suggested the victim could be Tony Soprano’s own daughter or son. Last episode, the rival family boss, Johnny Sack (Vincent Curatola), told Tony S. to deliver Tony B. — dead — or he would "rain down on you and your family like you have never seen." The double entendre was noted.

At the very least, HBO hopes the competition will be sleeping with the fishes on Sunday night.

The show’s fourth season finale, in December 2002, snared 12.5 million viewers — huge numbers for a cable show — and even beat out the broadcast networks in the time slot — something that hardly ever happens, according to New York Post writer Michael Starr.

“All Due Respect” airs Sunday night at 9 p.m. on HBO. There will be 10 more episodes in the show’s final season in 2005.