Chapter 4

The day Jason came back, I waited at the train station exit for forty minutes.

When he came running over with his suitcase, I instinctively opened my arms, but I froze when I caught that familiar clinical smell.

He smelt like he'd brought the whole lab with him.

"I missed you so much," Jason said, pulling me into a tight hug. As he rested his chin on top of my head, I caught a faint whiff of chemicals clinging to him.

I looked up at him and noticed his phone's lock screen had changed. Now it was some complex molecule,…