A Better Way to Die by Paul Cornell
Jonathan Hamilton believes he'd heading to his death on an estate that is connected to multiple alternate worlds, facing off against a younger version of himself that he had "humiliated" several weeks prior at a dinner party in a card game. Now his younger Alt-Self has stolen money from the College of Heralds and even kidnapped a young senior Herald Precious Nothing before making his way to a place he can get back home or take Hamilton's place. Unfortunately this story suffers because unless you've read previous Jonathan Hamilton stories, what I just wrote above is the only thing you understand in the entire story. The story features a little twist that makes you wonder who the "true" rogue of the story is, but without understanding anything about the world it's almost worthless.