Everything Went Dark

Jordan and Addie were killed before they even left campus. Tatum and Emma already looked at all of the nearby Starbucks and when they couldn't find Siera, they went to REV. And since Jordan and Addie looked like Siera, they were killed. When they realized that they weren't Siera, Tatum and Emma assumed that Siera was still on campus. They found Jennan and Siera walking down the library stairs and easily shot them.

Jennan died instantly, but Siera took a little longer to die. She looked at Tatum and Emma, who were celebrating and completely ignoring the fact that they had to either go back to prison or go on the run. That was the last thing she saw before everything went dark.