chunk: Soon after, a neighbor's dog is found dead, its neck broken. The owner yells out into the courtyard, "You don't know the meaning of the word 'neighbors'! Neighbors like each other, speak to each other, care if anybody lives or dies! But none of you do!" All the neighbors run to their windows to see what is happening, except for Thorwald, whose cigar can be seen glowing as he sits quietly in his dark apartment.
  Certain that Thorwald is guilty, Jeff asks Lisa to slip an accusatory note under his door, so Jeff can watch his reaction when he reads it. Then, as a pretext to get Thorwald out of his apartment, Jeff telephones him and arranges a meeting at a bar. He believes Thorwald buried something incrimating in the courtyard flower bed and killed the dog to stop it digging there, so when Thorwald leaves, Lisa and Stella dig up the flowers; they find nothing.