Ch26.2 What secret do the children discover that Atticus has known all along?

The children discivered that Atticus had known all along how they were taunting Boo, and that they were the ones Mr. Radley had shot at the night Jem lost his pants.

“You aren’t starting that again, are you?” said Atticus one night, when I expressed a stray desire just to have one good look at Boo Radley before I died. “If you are, I’ll tell you right now: stop it. I’m too old to go chasing you off the Radley property. Besides, it’s dangerous. You might get shot. You know Mr. Nathan shoots at every shadow he sees, even shadows that leave size-four bare footprints. You were lucky not to be killed.”