- Complete The Forsworn Conspiracy and go to jail.
- Brawl, bribe, and/or lie your way into a meeting with Madanach.
- Follow Madanach’s instructions and escape with the rest of the prisoners, OR kill Madanach and escape on your own.
After completing the quest The Forsworn Conspiracy and choosing to go to jail, you will arrive in Cidhna Mine and will be informed by Urzoga Gra-Shugurz that you will have to mine for the rest of your life. Your journal will inform you that you have to find Madanach, also known as the King in Rags. Head through the gate, and walk down off the wooden platform, go to the miner, Uraccen who is sitting by the fire and talk to him.
He will say that you won’t be able to speak with Madanach unless you can get past the orc Borkul the Beast, who is standing outside a gate. Speak to Borkul, and he tells you to get him a shiv, you can also Brawl with him, pass a speech challenge or pickpocket the key from him. To get a shiv, talk to Grisvar the Unlucky, who will ask for a bottle of skooma. To get the skooma you have to find Duach and pass a speech challenge or win a brawl. Take the skooma to Grisvar who will give you a shiv. If you want to keep the shiv, you can still try the brawl or speech challenge to get past Borkul. Alternatively, you can pickpocket an additional bottle of skooma from Duach and bribe Borkul with it.
Once you get past the orc, you will see Madanach sitting at a desk, talk to him, selecting the last topic will have everyone in the mine turn hostile, and you will have to take the key from his body and leave through the locked gate. If you decide not to kill Madanach, he will ask you to hear Braigs story. Find Braig and ask to hear his story, after you have heard it, return to Madanach and tell him you spoke to Braig. He will tell you that he will help you escape, but only if you prove your loyalty to him by killing Grisvar the Unlucky, if you gave your shiv to Borkul, you can ask Madanach for one. Find Grisvar, and kill him, if you tell him that “Madanach says hello” he will become hostile and everyone else will try to kill him as well. Once he’s dead, return to Madanach, and he will tell you that you have become a Forsworn, he will then tell you to follow him, he will tell the rest of the inmates that it’s time to leave the prison through a tunnel in his chambers.
Follow Madanach and the Forsworn through the tunnel into Markarth Ruins and then follow these tunnels with them (if you killed Madanach and are on your own, it might be worthwhile to sneak), the first fight will be frostbite spiders. After you fight the spiders, you come out into a large room and will have to fight two Dwemer Spheres. If you’re on your own, you can go into sneak mode and sneak off the bridge onto the floor below, as the fight will be quite hard. Once the Centurions are dead, head along the paths until you reach a short tunnel that leads to a door to Markarth. If you are with Madanach, a Forsworn woman will be there who will give you all of your armor back and the armor of the old gods. If you are on your own, just exit. The Forsworn will all equip armor and run out; when they do, Thonar Silver-Blood will be waiting and Madanach and the Forsworn will kill him and the guards in the city, and your bounty will be gone. If you killed Madanach, Thonar will give you the Silver-Blood Family Ring and your equipment, and then pardon you.