Now, another bitter courtroom battle, this time between britney spears and her former manager. Sam lufti accuses britney's father of attacking him and threatening his life just days before britney's... See More
Now, another bitter courtroom battle, this time between britney spears and her former manager. Sam lufti accuses britney's father of attacking him and threatening his life just days before britney's public meltdown. Abbie boudreau has the story. Reporter: These days, britney spears' life is pretty drama-free. A devoted mom, who earned $58 million last year. She had a hit album, "femme fatale." And is now a judge on popular talent show, "x factor." Five years ago, britney's life was spiraling out of control. And now, new details of that public meltdown are being revealed this week in a los angeles courtroom. I can't answer that question. Reporter: Sam lufti claims he's the pop star's former manager and is suing britney's parents for defamation, libel and breach of contract. During the course of this, all sorts of nastiness is coming out. Allegations of drug use. Allegations of psychological issues. Reporter: In court wednesday, lufti claimed britney's parents were out of control, too. Testifying that the superstar's father once chased him around the kitchen, punched him and threatened his life after an argument about britney's condition. The spears deny this. And lufti broke down on the witness stand, saying he contemplated suicide, after britney's mom wrote a book of him accusing him of hiding britney's cell phone. Lufti claimed that's untrue. And tearfully said, after the book came out, there was a huge spike in death threats. There were people wishing I was dead. Lufti testified that famous head shaving incident was to prevent britney's head follicles being tested for drugs during her custody battle for her sons. This is a respect for how high she's risen and how low she was. Reporter: Britney was not in court. But her parents were. Her mom, crying in the courtroom, as the jury watched a video of spears fighting with the pai. The thing britney would like most is to forget the bad part. Look to the future, which is very bright. Reporter: We reached out to britney's lawyer overnight about the shaved head allegations and got no response. Court will be back in session later today.
This transcript has been automatically generated and may not be 100% accurate.