Quest like aventus aretino quest (skyrim)?

so i just did the aventus aretino quest, where you kill gredol the kind and then i was kidnapped by the dark brotherhood. i was just curious if there are similar quests to this cuz that quest was hella bomb. not EXACTLY like it. but kind of like where you HAVE to do something and can't get out of it at all. i know there are alot of quests like that, but more like the aventus aretino one???