The moment Jodi Arias tries to play innocent with cops

Jodi Arias claimed that she was innocent but soon it would be revealed that she was behind the brutal murder of her ex-boyfriend in 2008. Footage from Jodi Arias: An American Murder Mystery - first airing Sunday - shows the moment the killer was confronted with the truth that she killed Travis Alexander. Arias was 30 when she met Alexander and the two embarked on a whirlwind romance that only lasted a few months but continued after with numerous sexual encounters in 2006.