jeantel's appearance. claiming her testimony took zimmerman's defense claim and blew it up. have you * she corroborated what she said. those are major issues. >> reporter: we are beginning with a bench conference with judge debra nelson. this is day five of this much-watched murder trial and still to be called is the state's lead investigator as well as the medical examiner who did trayvon martin's autopsy. martha: the courtroom has been packed since this trial began. the seat inside is a hot commodity as far as who gets to sit in the courtroom. 31 seats go to journalists.