Mrs. Mary Maloney is lighthearted, easily offended, and strong. She is static because we only see the sad/angry side of her. She is also static because she doesn't change throughout the story. She stays sad/angry the whole time.
Mr. Patrick Maloney is angry, selfish, and a drinker. He is flat because we only see the angry side of him. He is also static because he doesn't change throughout the story. He stays angry until he dies.
Personally, I think the weapon is somewhere near the house. It's probably right under our noses. What do you think, Jack?
"When the clock said ten minutes to five, she began to listen, and a few moments later, punctually as always, she heard the car tires on the stones outside, the car door closing, footsteps passing the window, the key turning in the lock" (1).
Mr. Patrick Maloney dies and his wife gets away with his murder
"All right, then, they would have lamb for supper. She carried it upstairs, held the thin end with both her hands. She went into the living room, saw him standing by the window with his back turned to her, and stopped" (2).
"'Personally, I think the weapon I somewhere near the house.' 'It's probably right under our noses. What do you think, Jack?' And in the other room, Mary Maloney began to laugh" (4).
The story has a creepily humorous mood that is created from the irony at the end of the story and from Mary Maloney not having any remorse for her actions.