I'm still in the earliest stages of planning a trilogy, and, throughout each book, my MC reveals the players of the game. The last person in need of discovering is the murderer himself—the one who executed the fatal blow. This moment, which is a mixture of "Ah-ha!" and "What!?", occurs in the final book. The murderer, however, is someone that has been present throughout the trilogy, and he's a very kind character(after having repented from a rebellious past). So, I'm at a loss. How do I give him that sense of "eligibility" for committing the murder, so as not to make this "Ah-ha!" moment seem completely random...like I pulled it out of my bum that very second? I understand I have to knit certain hints throughout the trilogy, but I'm not so sure how many "hints" is enough to have the "Ah-ha!" moment make sense. If you need a little more info, I can give you this: John(the murderer) was raised in a prominent—and corrupt—political family. His father was in one of the highest ranks of the hierarchy and expected John to follow in his footsteps. However, to join the ranks you have to be "initiated". This initiation is the execution of a criminal(whether they are actually a criminal or have just managed to piss off prominent members of the gov.). John, pressured to make his father proud, was taken to his target and egged on to commit murder...and he did. However, the experience was so disturbing that he completely disowned his family and moved out of the city once of-age. The man he murdered happened to be the father of his future friend(who he did not know to be associated with the man). His friend, as a teenager, made a pact to kill every man who ever ruined his life. The friend, too, had no idea John was involved. I think you can take it from there. I'm leaving a lot out, by the way. Thank you for your advice!