Downey family has sued ABC and the producers of "Extreme Makeover: Home Edition," claiming that there is a tale of greed and deception behind the scenes of the heartstring-tugging reality hit. In a suit filed Wednesday in Los Angeles Superior Court, Charles Higgins II, 22, and his four younger siblings say that the producers took advantage of the family's hard-luck story and promised them new cars and other prizes to persuade them to participate in the program, first broadcast on Easter Sunday, March 27. The Higgins children say that after both parents died within weeks of one another in 2004,...