idea that samuels cannot be trusted, that he's too close to jodi arias. >> isn't it true that in this case, you lost your objectivity? >> objection. >> absolutely not. >> reporter: samuels' testimony critical in explaining jodi arias's 18 days of testimony and keeping the 32-year-old off death row for killing her on again-off again boyfriend, travis alexander, in 2008. >> dr. samuels is a critical witness for the defense, because if jurors believe dr. samuels, then jodi arias really doesn't remember the details of the killing. >> reporter: the trial going nearly three months now is attracting snowbirds like steve pinto from new jersey. he's been watching on tv since day one. today's his first day in court. he lined up at 4:00 a.m. why? what has hooked you into it? >> because she looks so innocent, but the crime that she made is very, very fierce, which she's done. >> reporter: but you don't believe she's innocent, though? >> oh, no, definitely not.