Don't go out there! The Black Ledger. Six months has passed since the incident at the Tan Hill Inn. The black ledger recovered by David from his friend's car is now with Karl, Tanya, and their team. With this book, they have damaged the business of the owner, the Grigory Sokolov family. Russian mafia. And along the way Karl and Tanya, with the help of their friends, have put an end to the depraved actions of others.