The Alienist + Miss Peregrine's Home For Piculiar Children Theory
I know the title is a little crazy, but please hear me out! This might be a little difficult to understand if you aren't familiar with both stories/universes. Hopefully I can make you guys understand through my explanations. This is going to be a long one, so buckle in. If you have any questions, feel free to ask.Â
Dr. Laszlo Kreizler is an Alienist/psychologist. He specializes in the minds of children, but he also helps select adults as well. The Kreizler institute is a place for wayward boys and girls can be helped with their mental illnesses/mental health. Most of the children however have seeked refuge in the institute as an escape from abusive parents and family members.
Laszlo himself was beaten and abused by his father as well as his sister (whom he is no longer close with. She also lives in England). Both of their parents treated them poorly, and I like to think that's part of the reason why his focus became children.
Miss Peregrine's Home For Piculiar Children:
[These stories/books are fantasy driven, just so you all know]
Piculiar has another meaning in these particular stories. In this case, it means that anyone with a strange or unusual talent/ability is considered piculiar. For example: being invisible, having super human strength, the ability to bring the dead back to life, etc.
There is an organization who call themselves ymbrynes, and they're all females. It is said that men cannot have the same powers as a ymbryne, such as manipulating time. The main job or duty of a ymbryne is to protect and care for piculiar children. Most piculiars live in what is called a Time Loop, which is a safe place ymbrynes create to keep monsters and bad people at bay (Normals can't enter time loops).
Ymbrynes have another power that male siblings of ymbrynes can inherit, which is the ability to turn into a bird at will. However if one is injured in human form then he or she can't turn into bird form and vice versa.
I think that Laszlo's sister is a ymbryne and he inherited the ability to turn into a bird. A Starling to be exact. But their father loathed the fact that his wife had given birth to two peculiar children. He mentally and physically abused his children regularly, but his daughter soon gave up and pretended she wasn't peculiar. But Laszlo refused to repress his piculiar ability. So his father broke his arm and made sure it would never heal properly, so he could never turn into a bird again.
The reason Laszlo and his sister are no longer close is because the abuse his sister recived made her believe that it was wrong to be peculiar, and so she sought out to have a normal life. Laszlo was upset with her for turning her back on her duty to care and protect children, so he decided to care for children instead. He didn't want what had befallen him as a child to happen to anyone else.
Without the ability to manipulate time and create a safe time loop, he created his institute instead. Taking in any child that is precived as crazy, mentally ill/unstable, influenced by evil forces/demons, in hopes to protect them. To save them from a lifetime of trauma. And on some occasions he'll find a piculiar child and encourage them to use their piculiar abilities, instead of making them hide them. Because all the children he helps are taught to be open minded and accepting of everyone and everything. Well... acepting of everything that doesn't harm anyone.