Plotted to kill my half-brother because he had a claim on my throne. Two kill events fired. The first event completely succeeded, he died, I remained anon. Then the second one partially succeeded, he died, I was found out. Even though the first one killed him already, I got the kinslayer trait because of the second one. This is not the first time I've had more than one murder event fire with more than one end result and all of them applying.