I find a yellow notepad and start writing. With Adam’s help, I warn the original team not to trust Lynne and instruct them on what she’s going to do and how to get out alive. We tell them about Team Echo, to make sure they meet Zahra, Paige, and Ken. We write about Jeremy and his betrayal. And then we tell them about Vincent’s plan, about the future we saw, and about how genicote is always going to be used as a weapon by someone or other. Then Adam instructs himself on how to make it safe. By the time we’re done, our letter to ourselves is five pages long. I fold it up, put it in a plain white envelope, and seal it before handing it to Paige. “That should cover it all.” “The accelerator is ready,” Dr. Walters says. Behind him, the machine hums with an electrical buzz and glows with low b

