Battlestar Galactica alum Tricia Helfer will guest-star on a Season 3 episode of the Lie to Me, TVGuide.com has learned exclusively.

Helfer will play Naomi, who’s attracted to Lightman (Tim Roth) despite being frustrated by the inability to hide anything from him. But when she calls on Lightman for protection from a violent ex-boyfriend, it’s Lightman who begins to wonder if her beauty has impaired his lie-detecting skills.

Best known as Cylon Number Six on Battlestar, Helfer, 36, currently stars opposite Dylan McDermott on TNT’s Dark Blue. She also recently guest-starred on USA’s Burn Notice and the series premiere of Fox’s Human Target.

Helfer joins a slate of Lie to Me Season 3 guest-stars that includes Breaking Bad’s Anna Gunn and Shoshannah Stern. The airdate for Helfer’s episode hasn’t been scheduled.

Lie to Me wraps its second season Monday, Sept. 13 at 8/7c.

It returns for Season 3 Wednesday, Nov. 10 at 9/8c.

What do you think about the change?

So what do you think? Looking forward to seeing Anna on Lie to Me? Or, maybe you’re just happy someone will be ‘bringing down Detective Wallowski’? Whatever it is, make sure to share your thoughts below.

As the new season approaches, there will be more to report on this new addition, as well as the other things coming up.

For info and photos of Alyssa Diaz, check out IMDB.com.

[ALISON "SONNY" ASKEW] Any ethnicity. 30 – early 40s, a tough woman with shades of beauty tucked beneath a tomboy veneer, Sonny is an ex-boxer and is currently the trainer for underground fighter Orlando Lima. An acquaintance of Lightman’s, she knows him from those dark nights when his gambling jones overwhelms his better intentions — but when Orlando is suspected of murdering his female rival, Aneta Maybin, she calls on him to solve the murder. Made aware by Lightman that their “friendship” is tenuous at best, she undergoes his withering scrutiny, insisting that neither she nor Orlando killed Aneta. When Lightman is scooped up by boxing promoter / gangster Reese Kraball, Sonny hopes against hope that Lightman can clear them all and find the real killer…GUEST STAR

[REESE KRABALL] Any ethnicity. 30s – 40s. Kraball is the owner of Carpetorium, a carpet warehouse — but that’s just a front. By night, his warehouse becomes the site of underground fights where a lot of untaxed gambling money changes hands, some of it Lightman’s. A man with close connections to organized crime, who’s the object of a Federal investigation, Kraball is very unhappy when one of the fighters is murdered and a hot bright light of police interest gets poured on his business. Desperate to offer up a coerced confession to the cops and get them off his back, Kraball intends to have every possible suspect clobbered until they talk, and he reluctantly agrees to allow Lightman to try a subtler form of investigation. He later turns livid when he suspects that Lightman has been working hand in glove with the cops as well, and contemplates cleaning house by eliminating Lightman…GUEST STAR

[BRUCE MAYBIN] Caucasian. In his 50s, originally from the Ukraine (speaks with a slight accent), Bruce is the father of the recently-murdered Aneta Maybin, and he’s apparently grieving when he and his wife are questioned by Reynolds. Having adopted Aneta when she was only 8 years old, Bruce claims to be devastated by his loss. In fact, he and his wife used Aneta as their personal slave, forced her to live like a dog for a decade, and held her in utter contempt. …GUEST STAR

[MARIE MAYBIN] Caucasian. 50s, originally from the Ukraine (speaks with a slight accent), Marie is the mother of the recently-murdered Aneta Maybin, and she’s apparently grieving when she and her husband are questioned by Reynolds. Having adopted Aneta when she was only 8 years old, Marie claims to be devastated by her loss — but she’s lying. She used Aneta as her personal slave, forced her to live like a dog for a decade, and held her in utter contempt…GUEST STAR

[ORLANDO LIMA] Hispanic. A flyweight (small) figher in his 20s, originally from South America, Orlando is an underground fighter who’s trained by Sonny Askew. Badly beaten in the ring by female fighter Aneta Maybin, Orlando suffers the embarrassment of being clobbered by a girl — and when Aneta is found shot dead, he becomes the prime suspect. Taken captive by Reese Kraball and beaten half to death all over again (but with his hands tied behind his back), Orlando refuses to admit having killed Aneta, and in fact he’s telling the truth. But he’s concealing the fact that he took a dive…CO-STAR / POSSIBLE GUEST STAR / PLEASE SUBMIT ACTUAL FIGHTERS/BOXERS

[ANETA MAYBIN] 18 years old, compact and fearless with an Eastern European look, Aneta is a young underground fighter, originally from the Ukraine. The adopted daughter of Bruce and Marie Maybin, Aneta has a lot of cold, focused anger deep inside her…CO-STAR / PLEASE SUBMIT EXPERIENCED FIGHTERS/BOXERS ONLY!!

[EMPLOYEE] One of Kraball’s thuggish employees, he tells his boss that they have an unwanted snooper: Torres…CO-STAR (13) SUBMIT ALL ETHNICITIES

[DALE] A watchful man in his 40s, Dale is the manager of a boat charter office, who gets suspicious when Foster shows up at his office to check up on a boat rented by her lover, Burns…CO-STAR (35) SUBMIT ALL ETHNICITIES

[REFEREE] 50s. Any ethnicity. The referee at Kraball’s underground fights, he’s a very fit man capable of separating bare knuckle fighters. He’s also keeping a very dark Maybin family secret that he reveals to Lightman (Tim Roth)…CO-STAR

[BILL DAWKINS] 40s – Early 50s.. Caucasian, middle-upper class, a broken man with a fractured heart, he has raised his two girls alone since the death of his wife well over a decade ago. Dawkins has hired the Lightman group to find his daughter, Molly, a runaway recently spotted in an Internet porn film. Agonized and in increasing despair, Dawkins is living out every father’s worst nightmare — and when he learns Molly is HIV positive, he is even more determined to track her down and help her. Dawkins has been lying to Lightman all along about a tragic incident in the past — but his motives stem from his determination to protect Molly from a shattering revelation…GUEST STAR

[MOLLY DAWKINS] Caucasian.. Bill’s 19 year old daughter, she’s pretty, not plastic, and has a young, innocent appearance. She is a deeply troubled young woman who ran away from home several months ago. A virgin, Molly had her first sexual experience on a porn shoot — and the fact that she is now HIV positive has sent her sliding even deeper into drug abuse and despair. Molly’s shocking recollection of a past tragedy has sent her on her downward spiral. However, her toddler’s memory of the past may be seriously flawed, and her resulting bitterness towards her well-meaning father may be sadly misplaced…GUEST STAR / MUST BE 18 OR OLDER

[MIKE OLSON] 40.. he looks more like an accountant than the prolific porn producer he actually is. However, despite his professional appearance, Olson is a Grade A sleaze with few moral compunctions. Olson feigns ignorance of how Molly, one of his performers, could possibly have contracted HIV on his watch. But Olson’s flagrant inhumanity and greed may have prompted him to deliberately and willfully put Molly’s life at risk…GUEST STAR

[LEE FENTRIS] Mid to late 40s, Caucasian, this sad sack is a broken-down porn star who seems stricken with remorse when Lightman informs him that Molly, one of his former co-stars, is now HIV positive. Fentris insists that he had no idea of his HIV status when he “performed” opposite Molly, but his sobbing concern for Molly is just a cover-up for his own guilty actions…GUEST STAR

[MAGGIE DAWKINS] Bill’s youngest daughter, age 17, she’s a smart, attractive young woman who is also desperate to find her older sister, Molly. Although she is almost pathologically sheltered by her overly protective dad, Maggie shares a loving bond with her father, and can’t understand her sister’s simmering resentment towards him. When she finally learns the reason for Molly’s antipathy, Maggie is even more resolved to spare her troubled sister’s feelings in any way she can…GUEST STAR / MUST BE 18+ TO PLAY YOUNGER

[MERCY] A tough girl of 18, she interviews with Lightman, believing him to be a prospective porn producer. She’s bribed to give Lightman some info about the missing Molly, one of her former co-stars. Mercy has been doing porn for the last several months, but when Lightman points out that she’s clearly too intelligent for this line of work, she’s withdrawn and dismissive…ONE DAY GUEST STAR / MUST BE 18+ / PLEASE SUBMIT NON-CAUCASIAN ACTORS

[LARRY] 35 – 45, he’s an unappealing but obviously affluent individual whose upscale home is a hangout for strung-out young porn performers and runaways, including Molly. When Lightman takes Molly out of his house, Larry tries to intimidate him, threatening to call the police. But when Lightman points out that his establishment might not withstand a good “toss” by the authorities, Larry drops the macho pose and gets out of Lightman’s way…ONE DAY GUEST STAR / PLEASE SUBMIT NON-CAUCASIAN ACTORS

[NIKKI] Age 18, this pretty, “tarted-up” porn actress interviews with Lightman, whom she thinks is a prospective porn producer. When she learns that Lightman just wants information, Nikki drops the sweetly ditsy act and turns hard-edged and nasty…CO-STAR / MUST BE 18+ / PLEASE SUBMIT ALL ETHNICITIES

[ED PFLUG] 45-55, he’s the manager of a fleabag motel. He admits Reynolds to the motel room occupied by Lee Fentris…CO-STAR / PLEASE SUBMIT NON-CAUCASIAN ACTORS

The casting call and storyline for this episode were previously posted.