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

Meredith Jacobs

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