Moon Bloodgood Returns as Katherine Casillas on ‘NCIS: LA’ (PHOTOS)

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Concours d'Elegance
Trae Patton/CBS
Concours d'Elegance
Sonja Flemming/CBS

Franklin Shapiro (guest star Christian Barillas)

Concours d'Elegance
Sonja Flemming/CBS

Kensi (Daniela Ruah) and Deeks (Eric Christian Olsen)

Concours d'Elegance
Sonja Flemming/CBS

Kensi, Deeks, and Franklin

Concours d'Elegance
Sonja Flemming/CBS

Good news? Bad news?

Concours d'Elegance
Sonja Flemming/CBS

Juda Ayari (guest star George Janko)

Concours d'Elegance
Sonja Flemming/CBS

Juda, Callen (Chris O’Donnell), and Sam (LL Cool J)

Concours d'Elegance
Sonja Flemming/CBS

What does he know?

Concours d'Elegance
Trae Patton/CBS

Katherine Casillas (returning guest star Moon Bloodgood)

Concours d'Elegance
Trae Patton/CBS

Katherine and Fatima (Medalion Rahimi)

Concours d'Elegance
Trae Patton/CBS

Sam and Callen

Concours d'Elegance
Trae Patton/CBS

Sam and Callen reunite with Katherine.

Concours d'Elegance
Trae Patton/CBS

What will the team learn at this event?

Concours d'Elegance
Trae Patton/CBS

What’s Fatima looking at?

Concours d'Elegance
Trae Patton/CBS

Katherine and Sam

Concours d'Elegance
Trae Patton/CBS

Fatima and Callen

Concours d'Elegance
Trae Patton/CBS

Katherine

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The team is getting help from an old ally in Sunday’s episode of NCIS: Los Angeles.

Moon Bloodgood returns as insurance broker Katherine Casillas in “Concours D’Elegance.” She previously appeared in “Provenance,” in which she helped the agents with a case in the art world, including talking Kensi (Daniela Ruah) through an undercover assignment.

And now, Sam (LL Cool J) and Callen (Chris O’Donnell) cross paths with her during their investigation into the theft of an undersea drone prototype and a link to a video game streamer’s elaborate party; she insures the gamer’s property.

Click through the gallery above for a look at Katherine working alongside the team again and the rest of the case.

NCIS: Los Angeles, Sundays, 9/8c, CBS