A white van that has come up in the investigation also returned to the conversation Monday as the defense team questioned an investigator and a local man.

The call from Allen, an Indiana man on trial for the murder of two teenagers in 2017 ... after going for a hike on the Monon High Bridge Trail in Delphi, Indiana. Their bodies were discovered with both of their throats cut near the trail the next day.

Experts and observers weigh in on what the jury did -- and didn't -- see or hear during first two weeks of trial for man accused of killing two teens.