0 welcome back. how was london? [ female announcer ] when people talk, great things happen. hello. i m alison kosik in for fredricka whitfield. thanks for joining us. these stories are topping our news this hour. in hiding after being wrongly linked to a shocking crime. brothers of kidnapping suspect ariel castro are now speaking out exclusively to cnn. a break in the mysterious case of an 8-year-old girl found stabbed to death in her california home. investigators have arrested her 12-year-old brother. shocking details ahead. in washington, top irs officials knew as far back as 20 11 that agents were singling out non-profit groups. what the white house response has been so far. but first, martin savidge exclusive interview with the brothers of kid naps suspect ariel castro. martin joins us live from cleveland. martin, this is the first time pedro and onil castro have spoken out. what did they tell you? they have so much that they have to say. it was really difficult to fi