Sophie Hannah

Some writers, I'm told, look for their characters' surnames in telephone directories. I don't - it seems too obvious. Or too deliberate: if you go looking for names, you're bound to find them, of course, but I've always had a superstitious hunch that the names you find by accident are always going to be better and more satisfying somehow.

The best way to get a sense of what kinds of emergencies might present themselves in your community is by contacting local chapters of the American Red Cross or offices of emergency management in the region or state. Most large cities will have their own offices of emergency management.