Stars You Didn't Realize Were On NCIS

On NCIS: After the wife of a Navy SEAL is found dead, Gibbs has to rely on the couple's daughter, Rachel Barnes, for information. The young girl leads Gibbs to believe that it may have been revenge for the SEAL's work taking down a dangerous group of terrorists, but it turns out there's an even more sinister twist.

Watch Rachel in "Parental Guidance Suggested" on CBS All Access.

On NCIS: Dr. Walter Magnus is Ducky's mentor and the former chief medical examiner for NCIS. Though he left the team long ago, he returns to help the team with a difficult case in "Recruited." 

Where you may have seen him on CBS: Bob plays Arthur Jeffries on The Big Bang Theory.

Watch Dr. Magnus show off his skills in "Recruited" on CBS All Access.

On NCIS: Manheim Gold is an '80s rock legend who finds himself in the middle of an NCIS investigation when a bomb detonates at one of his military charity concerts. 

Where you may have seen him on CBS: Keith plays Wyatt, Penny's dad, on The Big Bang Theory and President Conrad Dalton on Madam Secretary.

Watch as DiNozzo and Gold stir up trouble in "Rock And A Hard Place" on CBS All Access.

On NCIS: Dr. Cyril Taft is a highly-skilled surgeon who's just as good at making people laugh as he is with a scalpel. 

Where you may have seen him on CBS: Jon Cryer plays Alan Harper on Two And A Half Men.

Watch Dr. Cyril Taft save Gibbs' life in his NCIS debut episode, "Stop The Bleeding," on CBS All Access.

On NCIS: Marine Gunnery Sergeant Aaron Davis is a Special Ops sniper who was wounded while serving in Iraq. He's been receiving treatment at the Walter Reed Medical Center, where he participates in a rehabilitation program run by MusiCorps that helps servicemen heal through music. 

Where you may have seen him on CBS: Taye plays Dean Levine-Wilkins on The Good Wife.

Watch Aaron Davis rock out with the MusiCorps Wounded Warrior Band in the 300th episode of NCIS, "Scope," on CBS All Access. 

On NCIS: Anthony DiNozzo, Sr. is the extremely charming father of former NCIS Special Agent Anthony DiNozzo, Jr. While his relationship with his son hasn't always been the greatest, the two have worked hard over the years to mend their bond, and in "Family First," they seem closer than ever. 

Where you may have seen him on CBS: Robert plays Teddy Leopold on Two And A Half Men.

Watch Senior bring a smile to DiNozzo's face in "You Better Watch Out" on CBS All Access.

On NCIS: A ruthless investigator from the Department of Defense Inspector General, Richard Parsons tries to bring Gibbs down in "Double Blind." While he initially refuses to give up his fight to put Gibbs away for obstructing justice, Parsons may want to reconsider after something the NCIS team does for him.

Where you may have seen him on CBS: Colin plays Greg Short on Life In Pieces.

Watch Parsons evolve in "Whiskey Tango Foxtrot" on CBS All Access. 

On NCIS: Margaret Allison Hart is a defense attorney with fiery passion and devotion to justice. Her passion motivates Gibbs to recruit her for Joann Fielding's case in "Mother's Day." She later becomes quite fond of Gibbs and winds up helping him squash a dark part of his past in "Obsession." 

Where you may have seen her on CBS: Rena plays Quinn Fuller on The Bold and the Beautiful.

Watch Margaret's latest appearance on NCIS in "Rule Fifty-One" on CBS All Access, and watch actress Rena Sofer on The Bold and the Beautiful.

On NCIS: Senior Cadet Lucas Craig is a student at Remington Military Academy—the same academy DiNozzo attended—who might know more about the death of Private John Wallace than he's willing to admit.

Where you may have seen him on CBS: Robert plays Noah Newman on The Young and the Restless.

Watch Lucas artfully dodge DiNozzo and Bishop's questions in "Cadence" on CBS All Access.

On NCIS: Known lovingly as "Dorney," Ned is an NCIS Special Agent who works in the Cyber Operations division. Throughout his NCIS tenure, Dorney does whatever it takes to stop terrorist attacks and even risks his life trying to save civilians from a bomb explosion in Cairo, Egypt.

Where you may have seen him on CBS: Matt plays Baxter on Mom, Bullwinkle on Hawaii Five-0, Steve Blanton on CSI: NY, a cop on NCIS: Los Angeles, and Arthur the pizza guy on How I Met Your Mother.

Watch Dorney's first appearance on NCIS in "Sins Of The Father" on CBS All Access. 

On NCIS: Jackson Gibbs has the very special role of Leroy Jethro Gibbs' father. While the two don't always see eye-to-eye, they work hard to reconcile their differences, as seen in "Silent Night." 

Where you may have seen him on CBS: Ralph plays Sheriff Montgomery on CSI.

Watch as Gibbs grapples with the news in "Honor Thy Father" on CBS All Access.  

On NCIS: Daniel T. Keating is an NCIS agent who faces quite a bit of adversity. Accused of being a mole, Keating struggles to uncover the truth and clear his name.

Where you may have seen him on CBS: Jonathan is the hilarious announcer on Let's Make A Deal.

Watch as he fights for his integrity in "Last Man Standing" on CBS All Access.

 

On NCIS: Without Mike Franks, there would be no NCIS Special Agent Leroy Jethro Gibbs. Though Franks left NCIS in 1996, he remains a big part of Gibbs' life, helping him recover from a bomb blast in "Hiatus Part I" and "Hiatus Part II." 

In "Swan Song," Franks risks it all while helping Gibbs solve a case involving a menacing serial killer.

Where you may have seen him on CBS: Muse plays Mickey Bates on Criminal Minds and Admiral Arthur Fessenden on JAG.

Watch Franks appear as one of Gibbs' hallucinations in "Stop The Bleeding" on CBS All Access.

On NCIS: Not many people can intimidate NCIS Director Leon Vance, but Lamar Addison sure can. As Vance's father-in-law, Lamar struggles to make a connection with his son-in-law and his grandchildren. 

Where you may have seen him on CBS: Ben plays Sam Gibbs in How I Met Your Mother and Dr. Edward La Forge in Star Trek: The Next Generation.

Watch as Vance welcomes his father-in-law back into his life in "Homesick" on CBS All Access.

On NCIS: Jeanne Benoit is a brilliant doctor, and she also stole DiNozzo's heart. Though their relationship has been rocky over the years, he'll always care about her deeply. 

Where you may have seen her on CBS: Scottie plays Sheriff Rebecca Bowman on Zoo, Lieutenant Debra Hughes on CSI: Crime Scene Investigation, Lia Ramsey on CSI: NY, and Lindsey Archer on CSI: Miami.

Watch Jeanne Benoit's first appearance on NCIS in "Sandblast" and her latest appearance in "Loose Cannons" on CBS All Access.

On NCIS: Walt Osorio is a member of the Sherlock Consortium for Investigation, a secret society that looks into cold cases, and is one of Ducky's close friends.

Where you may have seen him on CBS: Richard plays Santa in Two And A Half Men, John on Mom, Warden McQueen in The Young and the Restless, Seamus Driscol in Star Trek: Voyager, and Batai in Star Trek: The Next Generation.

Watch him as he investigates the death of a retired lieutenant in "16 Years" on CBS All Access.

On NCIS: In "So It Goes," Ducky has a series of flashbacks that introduce us to his life pre-NCIS. Handsome and charming, young Ducky makes our hearts flutter!

Where you may have seen him on CBS: Adam plays Graham on 2 Broke Girls.

Watch Ducky reveal secrets from his past in "So It Goes" on CBS All Access.
 

On NCIS: Sarah Porter serves as the Secretary of the Navy, stepping in to help the NCIS team when things are particularly messy. She was sworn into office in "Whiskey Tango Foxtrot," and most recently made an appearance in "React," when her daughter was kidnapped. 

Where you may have seen her on CBS: Leslie also makes appearances as Sarah Porter on NCIS: New Orleans and plays Anne Farrell in Blue Bloods, Denise Partney in CSI: Miami, and Kira Meru in Star Trek: Deep Space Nine.

Watch as Secretary of the Navy Sarah Porter works with NCIS to find her daughter in "React" on CBS All Access.

On NCIS: NSA Agent Jake Malloy is NCIS Special Agent Ellie Bishop's ex-husband. When we first meet Jake in "Grounded," he and Ellie are happily married and setting out to spend the holidays together. However, their relationship takes a troubling turn.

Where you may have seen him on CBS: Jamie plays Ronnie Hale on CSI: Miami.

Watch the NCIS team defend Ellie against Jake's actions in "Day In Court" on CBS All Access.

On NCIS: CIA Officer Joanna Teague is the late Ned Dorneget's mother who helps Gibbs and the NCIS team find justice for her son.

Where you may have seen her on NCIS: Mimi plays Robin Schmidt on Two And A Half Men.

Watch Joanna search for the people responsible for her son's death in "Stop The Bleeding" on CBS All Access.