What Do the Numbers Mean?

When Jem looked into her mother's eyes, she saw a number. Everytime she looks into someone's eyes, she sees numbers. When her mother died, Jem realized what the numbers meant - they are the date that someone will die. And they are always right. Jem tries hard not to be around people, but Spider won't let her be. Soon they are in a hesitant relationship. She doesn't want to be, because she knows that he is going to die soon. In fact, if the numbers she sees around London are correct - and they always are - a lot of people are going to die soon. But when Jem and Spider flee, they soon are the prime suspects. The clock is running out for a lot of people.