>> then detective beth smith testified about two key pieces of evidence that the first jury never saw. first, a photo of derek on his high school basketball team, proving he did play basketball. an important detail because police believed derek met skyler moore on the basketball court. the second new piece of evidence was security footage from the night before crystal's murder that placed derek at a 7-eleven near both crystal taylor's home and skyler moore's. it proved, they said, derek had lied about his whereabouts back in 2001 when he told police he was miles from crystal's hawthorne home that night. >> did he ever tell you that he went to the 7-eleven? >> no. >> as the evidence was mounting against him, derek's defense went on offense, portraying the mother of his two children as a lair whose testimony couldn't be trusted. >> have you lied to your family