December 24, 2018, Moscow. Irina Akhmatova — a twenty-nine-year-old restaurant manager, wife, and mother — vanishes after arranging a ride through BlaBlaCar. The investigator discovers that three separate accounts on the platform, each with a different name and phone number, all trace back to a single device and a single IP address. Highway cameras track the suspect's car across hundreds of kilometers, digital forensics strip away every alias, and a coordinated arrest in Vladimir brings the killer face to face with the detective. What follows is a chilling confession of a predator who used ridesharing apps as hunting grounds. Entry #7 in The Wolfhound Files series — true crime narrated by a veteran Russian detective.