Bull Season 3 Episode 15, titled "Security Fraud," will show Bull (Michael Weatherly) working with a legendary lawyer. The brilliant but charming psychologist will be in another mission to solve a new case, but things will never be easy.

"Bull gets to work alongside a legendary lawyer who asks for help bringing a suit against the U.S. government for the death of a man killed while in witness protection," Bull Season 3 Episode 15's official synopsis read. "Bull's admiration for him is tested when he begins to deviate from Bull's advice."

Bull will have a chance to work with the legendary lawyer Walter Franklin (Dan Ziskie) in Bull Season 3 Episode 15. Franklin asks for Bull's help to lend a hand to a family who wants to sue the US Government after a man gets killed while under the witness protection program.

However, Bull and Franklin will have different opinions in Bull Season 3 Episode 15 when the trial starts, per OtakuKart News. As Bull idolizes Franklin, will he still admire him or try to insist his point of view to fight for what he thinks is right?

Meanwhile, in Bull Season 3 Episode 14, Nathan (Shawn Parsons) arrived at their lake house to surprise his wife, Ava. However, no one was home. Nate then just left her a message without thinking anything bad happened.

Things got serious when someone knocked on the door. Ava's driver, Chris, arrived at their house to pick her up, but to no avail. Nathan recalled the last time he talked to his wife in Bull Season 3 Episode 14, and it was pretty long ago.

Bull arrived at the lake house with Benny (Freddy Rodriguez) and saw the police was already processing the crime scene. Nathan was Bull's college friend. And in the case like it, the husband was always the suspect - especially that he didn't report her disappearance right away in Bull Season 3 Episode 14.

Bull found Nathan's explanation lame, although he repeatedly uttered he was his friend to convince himself in Bull Season 3 Episode 14. But as they found a great amount of blood in the kitchen through the use of luminal and a black light, they charged him with murder, although her body was nowhere to be found.

Nathan insisted his wife was still alive and the blood they saw wasn't hers. As he tried his best to prove his innocence in Bull Season 3 Episode 14, the evidence started to pile up against him.

Bull will be trying his best to solve another case in Bull Season 3 Episode 15, titled "Security Fraud," on Monday, February 18, at 10 p.m. on CBS. Fans can also watch the series on the CBS app, Hulu, and Roku.