End of story.
Not to post. Just to look . He wanted to see if anyone suspected. He searched for her name. Her wall was filling up: “Katya, are you okay?” “Haven’t heard from you in days.” “Please just message someone.” crime and punishment.vk
He typed: “I killed Katya Sokolova on October 12. I used a letter opener. I staged her phone. I posted as her. I am Alexey Morozov, and I am rotting inside this browser tab.” He stared at the blinking cursor. Then he changed the privacy settings to “Only Me.” End of story
It sounds like you're asking for a short story based on the title — blending the classic Dostoevsky theme with the aesthetic of an old social network (VK, popular in Russia and Eastern Europe). He wanted to see if anyone suspected