Chapters 15 and 16 Summary

In chapter fifteen, Doon discovers what he believes to be a problem. He says that if the boat is the method for escaping Ember, only two people will be able to leave. Doon lights another candle so they can better examine the room. It's only then that they discover another door. They enter to find hundreds more boats, each equipped with candles, matches, paddles and the other equipment the Builders believed would be necessary for the trip downstream. Doon and Lina look at the river that disappears into darkness and realize they've solved the mystery. Doon says they'll make their announcement the following day as the town gathers for the annual singing.

The following morning Doon's father heads to the shop though he doesn't have to. He's so accustomed to tinkering with things in the shop that he doesn't know what...