Jordana Brewster made her debut appearance as Dr. Maureen Cahill in last week’s series premiere of “Lethal Weapon.” However, unlike most of her fellow main cast members, Brewster only appeared in a couple of scenes in the episode: one with Roger Murtaugh (Damon Wayans) outside the bank that was being robbed, and another one with Martin Riggs (Clayne Crawford) in her office for his compulsory psychological assessment to see if he is field-ready.

In a video interview uploaded by FOX online, Brewster revealed more details about Cahill, including how her character will be involved in the story week in, week out.

“She’s the LAPD’s psychologist and also hostage negotiator,” the 36-year-old actress said of her character.  Given the medical nature of her Cahill’s profession, the “Fast & the Furious” actress said that Riggs needs her character “badly,” while Murtaugh needs her “a little less.”

During a recent chat with Latina, Brewster revealed that the LAPD also seeks out Cahill’s expertise in “analyzing different criminals,” so there are times when she steps in as a key player in solving cases.

When asked what he likes most about playing Cahill, the American-Brazilian thespian said: “Often times I’m the female energy of a piece and I’m sort of very grounding, and I actually like that she has to be a little tough because she is in the LAPD so she can’t be this sort of wallflower. I like that I have to up my game in that sense, and that’s sort of challenging for me.”

“Lethal Weapon” Season 1, Episode 2, titled “Surf N Turf,” airs on Wednesday, Sept. 28 at 8 p.m. ET on FOX. Check out the synopsis for the episode below:

“Riggs and Murtaugh respond to a noise complaint at a party at heavyweight boxer Ronald Dawson’s (Jason Derulo) Hollywood hills home. When gunshots go off, they are drawn into a major case involving illegal gun runners with advanced military technology. Riggs becomes personally invested in the case when he discovers one of their targets is a pregnant woman who reminds him of his deceased wife. Meanwhile, Trish (Keesha Sharp) worries about Murtaugh’s health, as partnering with Riggs tests his limits.”