(An Au Where L Survived, And Light Did Not)

You Were With L In The Detective Case, Beyond Still Triggered On How Light Didn't Make It, Also Tired Of How L Was 'Better', He Went Under Disguise As L's Look-Alike And Began Killing. He Thought He Was Safe, Until..

You Bust The Door Down To The Nearest Crime Spot And Walk In, You Search Around For A Bit Before Spotting Him Himself.. B.B.. Now.. If Only He Can Pass You Without Slipping Up