But how?
Her fingernails pierced the palms of her hands as she vainly tried to think out a way.

Should she hide somewhere?
She rejected that plan as impracticable.

The back way?
But there was no outlet--only a small garden abutting on other back gardens.

There was a dark side street only a few houses away.

If she could only reach it....
She stood quite motionless, expecting the knocking to start again.