NEITHER TRIBE IS SAFE FROM TRIBAL COUNCIL, ON "SURVIVOR: VANUATU�ISLANDS OF FIRE," THURSDAY, SEPT. 30 ON THE CBS TELEVISION NETWORK

"Double Tribal, Double Trouble" -- The castaways are shocked to learn that both tribes will lose a member at the next tribal council, on SURVIVOR: VANUATU�ISLANDS OF FIRE, Thursday, Sept. 30 (8:00-9:00 PM, ET/PT), on the CBS Television Network.

When the tribes arrive at the challenge, Jeff Probst informs them that it is a combination reward/immunity challenge and that both tribes will attend separate tribal councils to evict one of their tribe mates. A couple of castaways are extra nervous to hear this, having just clashed at camp over differing work ethics and personalities. An additional twist to the challenge puts one castaway in a very influential position.

And, the third and fourth castaways are voted off of the island.

YASUR (Yellow):
Julie Berry (23) -- Gorham, Maine
Ami Cusack (31) -- Lakewood, Colo.
Mia Galeotalanza (30) -- Tom's River, New Jersey
Lisa Keiffer (44) -- New Orleans
Scout Cloud Lee (59) -- Stillwater, Okla.
Leann Slaby (35) -- Kansasville, Wis.
Dolly Neely (25) -- Mercer, Penn.
Eliza Orlinz (21) -- Syracuse, N.Y.
Twila Tanner (41) -- Marshall, Mo.

LOPEVI (Red):
Chad Crittenden (35, amputee) -- Oakland, Calif.
Chris Daugherty (34) -- South Vienna, Ohio
Brady Finta (33) -- Huntington Beach, Calif.
Rory Freeman (35) -- Des Moines, Iowa
Brook Geraghty (27) -- Winthrop, Mass.
John Kenney (22) -- Los Angeles
Lea "Sarge" Masters (40) -- Columbia, S.C.
John Palyok (31) -- Los Angeles
Travis "Bubba" Simpson (33) -- Blountville, Tenn.

SURVIVOR: VANUATU -- ISLANDS OF FIRE is produced by SEG, Inc. Mark Burnett and Tom Shelly are the executive producers.

For more detailed information on SURVIVOR: VANUATU -- ISLANDS OF FIRE, log on to www.cbs.com/survivor. For more information on Vanuatu, log on to www.vanuatutourism.com.

RATING: To Be Announced