The acident

I was walking on the beach at 2:00 AM when I saw a murderer killing a couple that were sleeping on a big towel. The murderer killed them and run away soas not to be seen but I took a photo with my mobile phone before he had gone. I quickly called the police but they couldn´t be there on time so the man could scape until a grey car suddenly appeared and hit him. Finally, the murderer fell down and a secret police agent that was casually there lifted him and put him handcuffs before taking the man to tyhe police station.