Spoiler alert! Appearing on

TV Guide Channel's TV Watercooler (in an installment encoring Tuesday at 8 pm/ET), 28 Weeks Later's Harold Perrineau hints that a familiar figure will resurface during the season finale of ABC's Lost - that of either Michael or Walt (played by Malcolm David Kelley), both of whom were last seen motorboating away to Jacob-knows-where. Alas for poor Vincent: The returnee in question brings bad, bad news from the outside world about the dog-food supply.