I don’t like to hear stories like this. Natalie Wood and Robert Wagner’s 37 year-old daughter Courtney Wagner has managed to stay out of the tabloids her whole life. But apparently she’s been just as f–up as any other celebrity kid that makes the magazines every week. I guess it probably didn’t help when that boat captain claimed her mother was murdered on the anniversary of her death this year.

Natalie Wood‘s daughter with Robert Wagner was arrested this week for coke and heroin possession — after a nasty fight with someone in her house … a fight that led to a gunshot.

Law enforcement sources tell TMZ, cops were called to the Malibu home of 38-year-oldCourtney Wagner last Sunday — when someone heard a woman screaming … followed by a gunshot.

When officers arrived, we’re told Courtney was found in possession of cocaine and heroin. She was arrested on suspicion of felony drug possession.

The other person involved in the argument — a male — was placed under arrest for negligent discharge of a firearm. We’re told nobody was injured.

Courtney has since posted $10,000 bail. It’s unclear if the other person is still incustody..