Content warning: This story mentions sexual assault and may be distressing to some readers.
Rachel Oertli was starting her shift at Lululemon store on a Saturday morning when she noticed something wasn't right.
That morning, in March 2011, she noticed the US store was unlocked, in a state of disarray, and the lights were still on out the back.
Concerned, she called 911 and asked a man outside for help.
When he walked into the store, he found 30-year-old employee Jayna Murray dead in the hallway and another employee, 28-year-old Brittany Norwood, tied up in the bathroom with cuts on her body.
He told Rachel to call 911 again.
"There's two people in the back of my store," Rachel told the dispatcher over the phone.
"One person seems dead, and the other person is breathing."
Responders arrived on scene and Brittany was rushed to hospital.
The 28-year-old, later told police the night before, on March 11, she went back into the store with Jayna after closing because she realised she had forgotten her wallet.
Once inside, two masked men reportedly entered the store and attacked the pair and sexually assaulted them.
When Jayna resisted, they stabbed her to death.