 During a February 2010 blizzard, Rex discovers that Stacy's child is not his; meanwhile, Gigi helps Stacy give birth in a nearby cabin to a baby girl she names Sierra Rose.Despite Rex and Oliver's attempts to save her, Stacy subsequently falls through the ice of a frozen lake and is presumed dead.In April 2010, Rex learns that Roxy and Mitch are not his birth parents; his only tangible clue to his real parents is a necklace that was left with him when he was abandoned at birth.