A Putnam County judge will allow video, allegedly showing Clifford Andersen ditching his sister-in-law's car in Morris, following her August 2016 disappearance.
The 67-year-old Andersen is accused of murdering his sister-in-law, 62-year-old Deborah Dewey.
Her body was found in a shallow grave behind a Standard, Illinois home three weeks after she disappeared.
Prosecutors claim Andersen showed up to the Morris Truck Stop in Dewey's car a day after she disappeared.
The LaSalle News Tribune reports that surveillance video shows Andersen walking into the truck stop, and calling for a ride.
He left about a half hour later.
Andersen's trial is scheduled to begin in July.
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