I have the rough outline of a plot, and I'm quite happy with it and the characters. But I'm having trouble with the tiny clues that leads to another one and so drives the plot and the characters slowly forward, closer to solving the mystery and reaching their goal. I need that trail of breadcrumbs basically. In the lead role I have a man, Eric, who in present time is a solider that kills monsters that eats humans. These monsters are just animals who go where the food is. Eric himself is a hybrid, part monster, part human and he constantly battle the other side so he doesn't completely turn into the monster he fights. There are many other soldiers like him, but he is slightly different because he chose to be turned, unlike the others. An important detail. Eric and his fellow soldiers are conditioned to not feel fear, pain, have a will of their own, etc., they just does as they are told pretty much. Eric however, has a personal agenda; finding his sister, who was turned into one of the monsters Eric hunts(you get bitten, you turn). That is why Eric chose to turn in the first place. His sister cannot be turned back into a human, so it is a mercy killing. Question is how he is going to find her? What clues does he find as he goes about his missions that slowly leads him to his sister? I also want the killing of his sister to reveal where these monsters came from in the first place(I have a legend in the story about this, but I'm not sure if I want this to be the truth), and so the story isn't over yet. There is a new goal; revenge on whoever cased this mess in the first place. I should also mention the other main character; a girl that kind of convinces Eric into taking her off a mountain that is infested with these monsters. This girl plays a crucial role in revealing what happened to his sister, that he turned willingly etc. She helps him battle his monster-side, so she goes from being a nuisance, to an asset, and finally a friend and a comrade where she helps him fight. I'm not sure if I'm going to let their relationship go further than that or not. But what I'm really struggling with are the so-called breadcrumbs I have to drop. Please help me brainstorm?