By Kelly Connolly
November 17, 2017 at 09:00 AM EST

Letty (Michelle Dockery) really did learn from the best.

In Sunday’s episode of Good Behavior, Letty, Javier (Juan Diego Botto), and Jacob (Nyles Julian Steele) visit Letty’s grandmother Alice (Holland Taylor) to ask for her help with a $50,000 problem. And by the looks of the exclusive clip above, they’ve come to the right place.

“You need to see the house,” Alice raves, leading Letty and Javier through an extravagant home. “We just use it to make people jealous.”

This isn’t Alice’s first rodeo with her dear “Letitia” — she sees right through Javier’s fake backstory, and she knows her granddaughter well enough to lock away the rarest valuables. Letty takes that as a challenge. “It’s no fun if it’s easy,” Letty shrugs. Alice bristles: “That’s my line. Steals everything.”

But could Letty’s prim and proper grandmother have a few tricks up her leopard-print sleeve? Check out the clip for a delightful twist ending.

Good Behavior airs Sundays at 10 p.m. ET on TNT.

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