Alien Attempts to Read a Book

"Help!  Help! Help!  Is this the Interstellar Police?"
 ....
"A Translucent, cone-headed alien is attempting to sneak through our window and read a book!"
 ....
"Yes, a realbook!"
 ....
  "I don't know why it doesn't get it online.   How would I know?"

Surveillance at Local Library