Tuesday October 7, 2008 8:00 PM 1.0 THE BIGGEST LOSER 604A

FAMILY TEAMS FACE TOUGHEST CHALLENGE YET --In part one of this two-part episode, one team gets to go home and surprise their loved ones, while another team cashes in on a prize to spend 24 hours with their trainer for a day they'll never forget! Then the contestants face their toughest challenge yet - a water tower competition that tests their endurance like never before. Later, one group of contestants incurs the wrath of their trainer when it seems they aren't working out as hard as they need to to stay on the ranch. Alison Sweeney is the host, and trainers Bob Harper and Jillian Michaels also star.