plus, the tiger woods tell-all. he s back to his winning ways. he s not the only one talking. tonight my primetime exclusive with his former coach about the firestorm surrounding his new book. this is piers morgan tonight. good evening. the shooting death of trayvon martin has touched a nerve across america. protests, the anger, the questions only growing. trayvon was killed by george zimmerman, a neighborhood watch volunteer in florida. he s not talking but lots of people are. this week, they re talking to me. i spoke to zimmerman s brother, robert, in a primetime exclusive. here s what he said about the explosive case. what did george tell you trayvon martin allegedly did to him? what has come out that i can talk about today is that trayvon martin somehow snuck up on him and according to mr. crump, the attorney, we don t know if this is verifiable information, but he was on the phone with his girlfriend. i don t know if that s a police source, but i know his attorney