- Travel to the specified city.
- Enter the city's palace and kill the target
- Return to the questgiver to complete the quest.
To start the quest, the Hero must have reputation of at least forty within the Dark Brotherhood. Speak to any questgiver, and they will inform the Hero that that they have to kill a member of a royal family who intends to "worm a way to the throne." Accept the quest, and the questgiver will point them towards a specific city.
Upon travelling to the specified city, enter the city's palace and locate the target. Upon killing them, return to the questgiver to complete the quest.
If the Hero doesn't complete the quest within specified time limit, they will lose reputation with the guild.