Golden Boy Golden Boy

Now that they've settled into their partnership, it's time for Golden Boy's Walter Clark and Don Owen to get to know each other a little bit better.

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On Tuesday's episode (10/9c, CBS), Walter ( Theo James) introduces Owen (

Chi McBride) to his sister Agnes (Stella Maeve)! As the pair investigates the murder of a drug addict, they stop off for coffee and breakfast at the diner where Agnes works.In the exclusive sneak peek below, it doesn't take long for Owen to note Agnes' general friendliness — something Walter sometimes has trouble displaying. But when Walter explains that Agnes is living with him rent-free as long as she keeps "slinging hash" at the diner, Owen begins to reconsider his partner's kindness.

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"You know you come off like some kind of lone wolf, but in reality you've got, like, a cub back at the den," Owen jokes. To see Walter's not-so-thrilled response, watch the clip below. Golden Boy airs on Tuesday at 10/9c on CBS.