Our Missing Hearts, by Celeste Ng

Twelve-year-old Noah Gardner receives a letter from his mother, who disappeared several years earlier. It has been opened by the authorities of course, and is covered with drawings of cats. Noah and his father, formerly a linguistics professor but now demoted to a janitor, live in a U.S. that shows what our current country could easily become.

A global crisis has lessened the country’s standing in the world, and in response, the government has created PACT, the Preserving of American Cultures ...