Here’s what I have for step four of the snowflake. It’s based on what I wrote here. I probably won’t be using what I wrote there, since some things have changed, but it gave me a feel for where I wanted to go.
A small portion of humanity, called “Schrecks”, are able to ingest human blood and gain strength, health, and nearly superhuman abilities. Samantha Chambers, a Schreck police detective, is one of the few she knows of that hates her “gift”. Still, it’s let her pursue the police career that she’s always dreamed of. Her first six months on the job are pretty mundane until she and her partner, Bill Jordan, are called in on a case that involves a Schreck attacker. When they arrive at the scene she’s shocked to find out that the woman looks just like her, practically her twin.
After some digging, they find out that this isn’t the first incident. This victim, a fashion designer, was the third in a string of murders. All of the women had the same build and general description as Sam. A homeless woman in San Francisco and a doctor in Oklahoma City. They were all killed by a Schreck or at least someone pretending to be one. The most recent victim has actual evidence that the attacker is one of them. He made the mistake of leaving some DNA behind.
The killer is identified as one Seth Marks. He’s a registered Schreck and is suspected of hunting people for food, though there’s no proof. Given his lifestyle it’s possible that he was responsible for the other deaths. When Sam and Bill arrive at his apartment they find it a complete wreck with blood everywhere. The partners go their own ways attempting to track him down. She follows a lead to another residence he keeps. There she’s attacked by someone much more powerful than her. Seth comes to her rescue and together the two are barely able to fend him off.
Seth reveals that he’s been able to find out some things about the victims. They’re Shrecks too and based on the evidence he’s seen they share DNA. The victims are all related. Convinced by the attack that’s Seth’s innocent and intrigued by the evidence that the victims might be related she goes to her partner. He tells her that she’s digging in some dangerous territory and that they should just bring Seth in and let the system deal with him. Unsatisfied with that answer she takes it to the chief. He assures her that it will be looked into. Shortly thereafter she’s attacked by some normals with some VERY hi tech gear.
Seth and someone who appears to be their attacker come to her rescue and they are able to escape. Once safe, she and Seth confront this person. This mysterious person reveals yet another layer of mystery. The three people killed so far are indeed all related. They are part of a set of sextuplets. Sam and one other woman are the only ones left, the sixth having died in childbirth according to the official records. They are part of an experiment to take the Shreck gene and refine it, creating a more powerful version on purpose. The fifth child is located in Canada and the stranger believes her to be safe at the moment. She reveals herself to be the sixth child, Andrea. The person killing them all is an unknown force. Seth and the Andrea convince Sam that it’s best if she disappears for a while. The government is after her and so is this stranger. Sam agrees to go underground with Andrea to root out the killer and evade the government.
They decide to head north and make sure that their last living sister is alright. They arrive at the safe house only to find that they’re too late. The three of them do face off with the killer though. A person claiming to be a “real” vampire found out about the government experiments. Its primary purpose was to create a force capable of rooting out and destroying his kind. Secondarily, the force would be a practically unstoppable weapon. The government was about to take all five of the known living sisters and begin stage two. The real vampire couldn’t let that happen. Together the three Shrecks are able to defeat the vampire, but they realize that if he’s right the government will still be after Andrea and Sam as will the vampire’s kin.
End of book one.