Not my favorite, but a Toxic Erin one and a slightly Neurotically Determinate Addison.
Spade
Erin carefully inspects the instrument on the table.
"Addison, what's this?" Silence meets her question. "Addison?"
She steps out behind the apartment complex to find an obscene amount of overturned soil. "Oh dear god." She's listened to Addison talk (in a scarily cheerful voice) about growing flowers, but hasn't expected this.
"Erin! Hey." Erin holds up the garden trowel. "Oh, I was looking for that."
"What, ah, were you planning to do with this?"
"I'm gong to lure Cary back here and then brick her up and leave her to rot," Addison deadpans.
"That's the answer I'm looking for."
Reference: Brick her up and leave her there to rot is an idea from Poe's Cask of Amatillado in which the protagonist bricks up his enemy in in his wine cellar. Pretty first-rate Poe stuff. Cary is a recurring character who Addison strongly dislikes, and she shows up once or twice in this fic, and is the subject of two conversations in my other fics, though I can't remember which ones.