there's something wrong obviously with dylann roof that will be mitigating enough to say he, even though he did this horrible act, does not meet the standard for a death penalty in this case. >> how is he convincing in that way, though, danny? someone who doesn't have remorse, how will he convince jurors that they should spare his life? >> mitigation at the capital sentencing phase is very complex. often just as complex as the liability phase. you have to hire experts. you have to have investigators dig into your life as a defendant and find all of the horrible things that happened to you to garner any kind of sympathy. this person had a bad family life. he had an awful experience. and that's what may have contributed to this person you see today. and you should have sympathy for him and spare him this ultimate punishment. it's such an important phase that it usually requires the assistance of not only attorneys but investigators and specialists in mitigation.