For about the first half of her life Thea Zane had lived a quiet, sheltered life with her Siren family, which included her mother, sisters, nieces, aunts, cousins, grandmother, and great-aunts in a large Victorian style house on the outskirts of a large human town. The house was a safe haven that her family had lived in for years, a place to raise their daughters and help them develop their abilities, while staying simultaneously close enough to and isolated from from the humans that surly wanted to hunt and eradicate their species. At the age of five Thea was the happiest girl in the world. Her mother was loving, there were so many other children to play with, their property was large and they were free to run and explore as much of it as they could. The lessons that the grown ups gave them to teach them control of their abilities, how to camouflage their wings, and of the dangerous world outside of their home could be tedious, especially to a child, but she attended them anyway and dreamed of the day that her wings were big enough so she could fly. But as she grew older the property seemed to get smaller and she began to realize that she wasn't as free as she thought she was. That they were all in hiding from some enemy she had never seen before, and almost didn't believe existed.

Her mother had always made her promise that she would never cross their property's borders, never pass through the forest and fields that separated them from the human town, and she always had. But as she grew up from a child and into a preteen she found the promise harder and harder to keep. Thea could see the human town in the distance from her bedroom window, could see the lights and night and dimly hear music in the distance, and she could feel a growing curiosity about everything outside of her little world growing within her. Her new curiosity was at odds with the suspicious nature she had been either born with or taught, and she began to grow frustrated and resentful of their property line and the cage she had always lived in. Of the loving women who were hiding them all away in fear of something that was probably only shadows. And of the way she was beginning to feel like a freak. It was a few weeks after she turned twelve when she finally broke the number one rule of her home and escaped into the trees that lined their property.

It was during her one single adventure that Thea met Will. He had been a human boy from the town that had been about her age and he had been exploring the forest that had separated from her home from his when he had heard the sound of her absentminded singing and had been drawn to it. Despite her blunder in accidentally luring him to her and of the suspicious nature she had always known, Thea found that it was easy to make friends with him and they talked for what had seemed like ages. They promised to meet each other again the next week before Will kissed her goodbye, and Thea, elated from the feeling of her first kiss, returned home, somehow managing to sneak in without anyone noticing that she had been gone. However she never got the opportunity to meet Will again.

It happened only a few nights after her venture into the woods. She was woken by the sound of a short scream that had cut off almost immediately, and the first thing she saw was the strange figure of a man standing over one of her sister's beds. She was unable to stop the scream, could not fight the instinct to run, but after she escaped the man in her bedroom she ran right into another man in the hallway. Thea's attempts to slip away from him were futile and he threw her over his shoulder as he laughed and called out to the rest of the half dozen men in her home that he had caught "the last little bird." When he threw her down onto the floor of the foyer she saw the bodies. Her grandmother, aunts, cousins, sisters, all of them were in a pile on the floor, glassy eyes staring at nothing and their clothes stained with red. More strangers entered, tossing more of her family members into this heap. But it wasn't until Thea saw a man carrying her mother's body that she started to scream like she had never screamed before. She barely heard it herself, and barely registered that the men, human hunters of Otherkin she would later learn, were writhing and convulsing from the sound. She could only look at her family. Thea Wailed for the first and only time in her life until she thought she would die, and it was only then that she noticed the perpetrators lying unconscious on the ground, and the sounds of her house collapsing. She manged to drag herself out in time before collapsing herself, half dead and wracked with sobs, and she remained there until the authorities arrived and found her.

It was then that BPI had first entered her life. They had been the ones to relocate her into an Otherkin community, and that's where she stayed for the remainder of her childhood. It took almost two years for her to process and heal from the devastation of losing her entire family, and during that time she had closed herself off from everyone, becoming introverted, angry, and sometimes aggressive. But eventually, with help from Otherkin who went through similar experiences and from the support of the whole community, she was able grieve and figured out how to move on and find happiness in her new life. Being surrounded by a number of new species reignited her curious nature and helped her overcome her renewed sense of suspicion and paranoia, and she was happy to find she was still able to make friends easily, despite everything that had happened. She wasn't able to fully go back to how she used to be, though, her rebelliousness replaced with caution and her naivety replaced with an iron will and a vow to never allow herself to be that helpless again. She spent much of her time over those years developing and learning to control of her abilities, as well as pursuing her new hobby of archery, which she found she had a real knack for.

When she turned eighteen the BPI reentered her life, telling her that they had been observing her ever since the incident and were impressed by her abilities. They told her that they might be in need of someone with her skills and offered her a job. Thea didn't even hesitate before accepting. If this new job would give her the opportunity to help people who had gone through the same sort of thing she had experiences, or even the opportunity to prevent something like it from happening to someone else, she was more than willing. Especially since, despite the genuine happiness she had found, she has always felt haunted by the massacre of her family. Particularly by the guilt that her trip across the property line and her meeting with Will may have caused it.