>> i'm craig melvin, i'm natalie morales and this is dateline. >> how do you feel that so many people think steven avery is innocent? >> it's emotional. >> they made him look like he was a nice person? what's happening is wrong, the evidence is beyond overwhelming. steven avery is guilty. >> i'm innocent. >> the story gripped the nation in a serious making a murderer. >> so many americans have learned about it. >> it's being heard by people around the world. >> steven avery and his nephew convicted of murder and the haunting killing of a young photographer.