White Lines is a new Netflix show that follows a woman named Zoe Walker as she decides to head to Ibiza after her DJ brother Axel is found dead almost 20 years of going missing, and the mystery thriller unfolds in unexpected ways. From high-speed chases, a cocaine drug ring, and a kidnapping plot, White Lines' ten-episode season has an ending that no one will see coming.

During the show's finale, the timeline flashes back and forth between the past and the present-day setting of Anna's wedding, and we finally find out what happened to Axel.

Who killed Axel Collins?

After Zoe confronts her, Anna reveals that she killed Axel with help from Marcus. The flashback reveals that after snorting some coke at his birthday party, Alex got a nose bleed and started struggling to breathe, and Anna took that opportunity to try to drown him in the pool. She then asked her husband Marcus for help, and the duo put Axel's body in Oriol Calafat' s car and drove away to dispose of the body.

However, it turned out Axel wasn't dead, and he managed to get out of the car. Marcus then ran him over, and Anna stabbed him in the neck with a screwdriver.

And while Marcus likely thought Anna had murdered Axel because they had just fought over Axel selling the rights to his music and the clubs he had set up with Anna, Marcus, and David to the Calafat family, the real reason for the murder is much more sinisterAnna was afraid Axel would tell Marcus that they were sleeping together.

And while Zoe now knows what happened to Axel, it's unlikely Anna will go to prison for the murder, since it's past Spain's statute of limitations for homicide, which is 20 years. However, Anna was a British citizen at the time, so she could be extradited to the UK to face trial, a plot line that could continue in White Lines season 2.