PREVIEW: Bo overhears Hope's startling confession; Sami gives Brandon an ultimatum. SUMMARY: Marlena and John discuss the possibilities of what they may discover if they return to the DiMera Island compound. John has difficulty even considering that Marlena could be a mother to the Twins and he persuades her that the answers they need have to be on the island. Although they don't have to rush since Tony is temporarily out of commission, he urges Marlena to be ready to leave soon... Tony/Lexie share their anger toward Stefano; Tony lashes out at Rolf, who swears he didn't know the Twins could be offspring of Tony's and he claims ignorance about the details of the Twins' mission and breeding. Tony asks Rolf to summon Stefano's private physician, Dr. Ash; Lexie does a sensory test on Tony, who feels the pin prick in his foot... Bo is stunned to find the bloody towel in the garbage can and becomes more distraught when he overhears Hope confessing to Jennifer that she killed Colin. Bo