Check out this Skyrim Dark Brotherhood walkthrough. Part 10: Breaching Security.
Player: Next on our list is killing Gaius Maro. He’s over here in an outpost called Dragons Bridge. You can see the bridge over there. Let’s get over there. So here in Dragon Bridge you find Gaius Maro having a little chat with his father, Commander Maro.
Gaius: Father, you worry too much. I’ll be fine.
Player: Just go ahead and ignore them. Heading to this outpost and then crouch, make sure no one can see us. And once this eye closes we’re going to steal his schedule. Now we know where Gaius is going to be. We can leave through that here. Monday in Solitude, Tuesday Windhelm, Wednesday Riften, but the one we are most interested in is Turdas or Thursday in Whiterun. So we’re going to head over to Whiterun. We’re headed over here to the Bannered Mare.
Hulda: Come on in. We got warm food, warm drinks, and warm beds.
Player: And we’re just going to hide in the corner here for a few days. All right. It is late at night in Turdas, and Gaius is asleep here so we’re just going to close the door. And say goodbye to Gaius Maro. Square the store and just roll out. Nothing to be concerned about. We were just wrestling.
Gabriella: Ah, at last. I’ve been anxiously waiting your return. Yes, I know. As does Astrid. You have done well and have earned both your reward and a bonus, as I may have mentioned. But you should know that we have a more pressing matter to deal with. It’s Cicero. There’s been an incident. You should proceed into the Sanctuary. I’ll let Astrid explain.
Babette: Just try to relax, Veezara. Let the elixir do its work. You’ll feel better shortly.
Player: Oh, no. Veezara, buddy.
Veezara: Ah, thank you, dear. You are most kind. The jester’s cut feels as bad as it looks I’m afraid.
Astrid: Damn it. This never should have happened. We knew better. We knew better and still we let our guards down.
Festus: I’ll admit, even I’m having a hard time disagreeing with you.
Astrid: Maro is dead I know. But we’ve got bigger problems right now. The fool went absolutely berserk. He wounded Veezara, tried to kill me, and then he fled. I knew that lunatic couldn’t be trusted.
Festus: It’s true, I’m afraid. Cicero was a little whirlwind, slashing this way and that. It would have been funny if he weren’t trying to murder us all.
Nazir: Don’t forget the ranting and raving. About the Night Mother, how she was the true leader of the Dark Brotherhood, and Astrid was just a pretender.
Astrid: Look, we’ve got to deal with this situation. You’ve got to deal with this situation. I want you to find that miserable little fool and end his life. But first, find my husband. Make sure he’s all right. After the attack, Arnbjorn flew into a rage. When Cicero left, Arnbjorn went after him. They disappeared into the wild. Seach Cicero’s room. Maybe there’s something in there that sheds some light on where he might have gone. Let me know the minute you find something. I’ve got to see to Veezara and calm everyone down.
Veezara: Bested by a fool. Who’s the fool now, hmm?
Babette: Hush, Veezara. You were very brave. Astrid may well be dead if not for you.
Astrid: She’s right. I’ll be forever in your debt, dearest brother. Now be quiet. Just rest.
Player: Feel better lizard bro. We got a crazy to track down. That’s not his room.