Keith Morrison

And there might have been at least one more face in that photo, if Maddie's best friend Ashlyn Couch had her way. Ashlyn had graduated a few months earlier, moved out of the house, and to save money, moved back to her parents' place in Coeur d'Alene. But that weekend, her parents were out of town, and they had asked a favor of Ashlyn.

And there might have been at least one more face in that photo, if Maddie's best friend Ashlyn Couch had her way. Ashlyn had graduated a few months earlier, moved out of the house, and to save money, moved back to her parents' place in Coeur d'Alene. But that weekend, her parents were out of town, and they had asked a favor of Ashlyn.

And so you asked her to stay?

And so you asked her to stay?

How did she feel about that?

How did she feel about that?

Has ever a favor asked by parents turned out to be such a godsend? Kickoff for senior day was 4.02 p.m. Touchdown! The game ended at 7.12. And less than an hour later, across the state line in Pullman, Washington, Brian Koberger was on his phone. At 8.08 p.m., records obtained by Dateline show, he was watching YouTube. Then around 9 p.m., Kaylee Goncalves posted that group photo on Instagram.

Has ever a favor asked by parents turned out to be such a godsend? Kickoff for senior day was 4.02 p.m. Touchdown! The game ended at 7.12. And less than an hour later, across the state line in Pullman, Washington, Brian Koberger was on his phone. At 8.08 p.m., records obtained by Dateline show, he was watching YouTube. Then around 9 p.m., Kaylee Goncalves posted that group photo on Instagram.

And in what would be the last social media post of her young life, Kaylee wrote, One lucky girl to be surrounded by these people every day. That Saturday night, Ethan and Zanna were attending a party at the nearby Sigma Chi fraternity. Kaylee and Maddie went to hang out at the Corner Club in downtown Moscow, arriving sometime after 10 p.m.

And in what would be the last social media post of her young life, Kaylee wrote, One lucky girl to be surrounded by these people every day. That Saturday night, Ethan and Zanna were attending a party at the nearby Sigma Chi fraternity. Kaylee and Maddie went to hang out at the Corner Club in downtown Moscow, arriving sometime after 10 p.m.

Three and a half hours later, at 1.37 a.m., the two women left the bar together, walked a couple of blocks to a place called the Grub Truck, and got some food, as you can see in this video. At precisely 1.49 a.m., one of the women called for a young fraternity member who'd been assigned to help drive home upperclassmen and women to make sure they arrived safely, a ride of little more than a mile.

Three and a half hours later, at 1.37 a.m., the two women left the bar together, walked a couple of blocks to a place called the Grub Truck, and got some food, as you can see in this video. At precisely 1.49 a.m., one of the women called for a young fraternity member who'd been assigned to help drive home upperclassmen and women to make sure they arrived safely, a ride of little more than a mile.

They got to the house on King Road at 1.56 a.m. Roommates Bethany and Dylan also got home around 2. Zanna and her boyfriend, Ethan, would return shortly. And starting at 2.26 a.m., Kaylee and Maddie made a total of ten phone calls to Kaylee's former boyfriend. A half hour later, at 2.54 a.m., a cell phone in neighboring Pullman was turned off. It was the cell phone belonging to Brian Koberger.

They got to the house on King Road at 1.56 a.m. Roommates Bethany and Dylan also got home around 2. Zanna and her boyfriend, Ethan, would return shortly. And starting at 2.26 a.m., Kaylee and Maddie made a total of ten phone calls to Kaylee's former boyfriend. A half hour later, at 2.54 a.m., a cell phone in neighboring Pullman was turned off. It was the cell phone belonging to Brian Koberger.

32 minutes later, at 3.26, a car that authorities identified as a white Elantra and called Suspect Vehicle 1 was detected in the southeast corner of Moscow. At 3.30 a.m., security video from a neighboring house, obtained exclusively by Dateline, shows Suspect Vehicle 1 turning toward 1122 King Road just off-camera. Three minutes later, at 3.33 a.m., the car was back, again passing the house.

32 minutes later, at 3.26, a car that authorities identified as a white Elantra and called Suspect Vehicle 1 was detected in the southeast corner of Moscow. At 3.30 a.m., security video from a neighboring house, obtained exclusively by Dateline, shows Suspect Vehicle 1 turning toward 1122 King Road just off-camera. Three minutes later, at 3.33 a.m., the car was back, again passing the house.

Then again five minutes later, at 3.38, and at 3.40 a.m., and then back on King Road at 3.56 a.m., and 3.58 a.m.

Then again five minutes later, at 3.38, and at 3.40 a.m., and then back on King Road at 3.56 a.m., and 3.58 a.m.

By 4 a.m., most people inside the house were in their rooms. Some were asleep. But not Zanna, who, about that time, received a food order from DoorDash. Then, at 4.06 a.m., something definitive seemed to be happening. The car traveled west, performed a U-turn at the intersection of King Road and Queen Road, and headed back toward the house.

By 4 a.m., most people inside the house were in their rooms. Some were asleep. But not Zanna, who, about that time, received a food order from DoorDash. Then, at 4.06 a.m., something definitive seemed to be happening. The car traveled west, performed a U-turn at the intersection of King Road and Queen Road, and headed back toward the house.