For what seemed like the hundredth time in the last ten minutes, Oliver's phone buzzed in his pocket. He sighed and slid it out, leaning on his side.

"Yes?" He asked, his voice scratchy with sleep. Felicity's voice started speaking, her words streaming out and blurring together.

"Whoa, whoa Felicity calm down." Oliver said, sitting up completely. He heard the woman on the other end taking deep breaths before speaking again. "Now try that again."

On the other end, Felicity wiped her eyes beneath the glasses. She stared at her free hand and started again, slower this time.

"Cisco called. H-He said something happened with Caitlin." She said, her voice hitching every now and again.

"Well is she okay?" Oliver asked and relaxed a little bit. Felicity shook her head furiously before remembering he couldn't see her.

"Caitlin's gone. They don't know where she went. But it isn't Caitlin. It's Barry." Felicity said and almost felt Oliver's shoulders tense up.

"Felicity where are you?" He asked, his voice even and mostly calm.

"On my way to STAR Labs." Oliver took a deep breath and started pulling on clothes.

"Okay I'll meet you there." He told her and heard the tell-tale click signalling she had hung up. On her train Felicity sat in the very back of her car, knees hugged to her chest and tears streaming down her face. Please Barry. Please don't let this be true. She kept repeating this to herself as she neared Central City.

Felicity ran into Oliver just outside STAR Labs. They looked at each other for a moment before running inside.

"Cisco? We're here!" Felicity called as the two Team Arrow members ran towards the cortex. When Felicity saw no one was inside, she left but something caught Oliver's eye. He walked to the computer table and looked at the security footage from the pipeline. His blue eyes narrowed at the sight of Cisco and Iris kneeling beside something, while Joe and H.R. stood behind them. The four blocked whatever was on the floor from his view but a sinking feeling in his stomach made him worry.

"Oliver what is taking you so long- Oh. Oh no. No, no, no!" Felicity started crying again as they raced down to the pipeline. As they entered, four heads swiveled simultaneously. Felicity's hands flew to her mouth as she kneeled next to Iris and Cisco. Her fingers floated away from her mouth as she hovered her hands over Barry's pale, lifeless face. She bit back a sob and hugged Iris. Cisco stood up and walked over to Joe and Oliver. His voice was quiet and thick with sorrow.

"Barry was only trying to get Caitlin back. He didn't think that cold hearted little-" Cisco took a shuddering breath. "Anyway, in short, Killer Frost kinda took over Caitlin's brain and she killed Barry." He finished, looking down. Oliver nodded slightly and looked at Barry's face.

"How long ago?" He asked shortly. Cisco shrugged.

"Few hours. Haven't moved him and the reason we know he's dead. He isn't healing and no pulse. Then again he did get an icicle shoved through his heart." Cisco gave a dry, humorless laugh. Oliver squeezed his shoulder as everyone else gathered around Barry. Cisco and Oliver took their places next to Felicity and Iris, closing their eyes.

"Don't worry Bar. We'll take good care of you and ourselves. I promise." Oliver whispered so quietly, Felicity and Cisco thought they had imagined it.