When he's through, he signs his name to it." Miss Cornelia sat bolt upright.

"His name?
I thought nobody knew his name ?" The detective made a little gesture of apology.

"That was a figure of speech.

The newspapers named him the Bat because he moved with incredible rapidity, always at night, and by signing his name I mean he leaves the symbol of his identity--the Bat, which can see in the dark." "I wish I could," said Miss Cornelia, striving to seem unimpressed.
"These country lights are always going out." Anderson's face grew stern.

"Sometimes he draws the outline of a bat at the scene of the crime.