forensics in houston. it's precisely that misuse of forensic evidence that landed you on death row wrongfully for 18 years. >> yeah. i'm with the houston forensic science center and our job is to make sure the is are dotted the ts are crossed and everybody is playing fair. i'm going to be right there to make sure that's what's happened. >> anthony graves houston forensic science center, thank you so much. >> thank you, sir. still ahead in, drought-stricken california there's a nasty fight over bottled water. tonight we bring you to the front lines inside the nestle bottling plant. and donald trump's vicious twitter assault on his republican rivals has officially begun. we'll tell you which senator he called a dummy and which ex-governor he wants to take an iq test, next. plumbers carpenters and even piano tuners... were just as simple? thanks to angie's list now it is. start shopping online... ...from a list of top rated providers. visit angieslist.com today.