and he was missing in action , sent home to lay low yet again until the case was done . things looked up after he sat down , though , because emma came in and sat next to him . there must be something to do , some way to help ... . then i stepped on the gas and took her down another road that led us onto the highway . he lowered his voice : `` now , about this evening . takes a long time to learn how to build a bomb without blowing your head off . 