>> ma'am? >> they stabbed me. >> who did? >> darren was upsleep astaitair with their infant. he heard a glass break and that's when he came downstairs to find a bloodloodbath. >> there was blood all over. >> the 6-year-old had two devastating wounds to his chest. he was impaled by a large knife. >> darren tried to perform cpr. >> when i blew into his mouth, the first thing that happened was air came out of his chest and blood spilled all over me. >> is anybody in the house besides you and the children? >> my husband. he's upstairs. oh, my god.