Now Playing: Tampa man arrested for allegedly killing roommates who he felt disrespected his Muslim faith

Now Playing: White nationalist featured in documentary surrenders to Charlottesville police

Now Playing: Charlottesville shrouds Confederate statues

Now Playing: $3 million lawsuit filed against organizers of Charlottesville white nationalist rally

Now Playing: Charlottesville teachers sing 'Lean on Me' after violence

Now Playing: Prince Andrew breaks his silence about his relationship with Jeffrey Epstein

Now Playing: Bombshell testimony in the trial of Patrick Frazee

Now Playing: Rodney Reed granted indefinite stay of execution

Now Playing: Representatives from 24 teams expected to appear at Colin Kaepernick’s workout in Atlanta

Now Playing: Trump responds to former US ambassador’s testimony

Now Playing: Police video shows dramatic rescue as officer saves woman from burning car

Now Playing: Former US ambassador to Ukraine testifies in public at house impeachment hearing

Now Playing: Yingying Zhang has still not been found: Part 11

Now Playing: Brendt Christensen claimed he killed 12 others before Yingying Zhang: Part 10

Now Playing: 2 years after Yingying Zhang disappeared, Brendt Christensen goes to trial: Part 9

Now Playing: Brendt Christensen arrested, charged with Yingying Zhang’s death: Part 8

Now Playing: Brendt Christensen attends vigil for missing scholar Yingying Zhang: Part 7

Now Playing: Brendt Christensen was struggling with marriage when Yingying Zhang vanished: Part 6

Now Playing: Brendt Christensen arrested in connection to Yingying Zhang’s disappearance: Part 5

Now Playing: Investigators identify car Yingying Zhang got into the day she vanished: Part 4