I think Spencer in that s5 episode with the Unsub that turns people onto dolls is fascinating because at face value, is not your typical Spencer projects himself on the Unsub episode.
Like by the premise alone one would assumed this would be an Derek episode, an CSA víctim, or Even an J.J or Hotch episode, with the whole parental "what the fuck did you do to your daughter you piece of shit". But instead- the focus is on Spencer. Why?
Like putting what Memoriam implied aside and even if you believe William did MORE that abandon his son, Spencer doesn't go full volatile when he learns that the guy raped his daughter- he was already seething when he learned that this doctor, this psyquiatrist, was using electro shock therapy. On his own child. And this is late s5 Spencer- the man that was seeing his pregnant co-worker and started to imagine one day, having little ones of his own, Specially while holding the newborn in question.
So now he is confronting a "father", an scientist hurting his daughter only to uncover the even uglier truth and once again, their Unsub is an víctim. Not only of their mental illness out of severe parental abuse (in this cause, physical and sexual).
But ultimately, I think that this is an Spencer episode because the víctim is the Unsub. What Made these kind of Spencer's episodes so compaling to me (besides the fact that he is My fave lmao) is how...empathic he is with someone that otherwise would just be looked at for the atrocities they commited, and not what was done to them. And sure, everyone would scorn at the fucking pedophile that molested his own daughter and other parients- that is basic human decency- but not everyone would gently look at a woman that hurt other women and hand her a doll with a smile before she is taken away. Not everyone would feel Bad for the man that tortured them. Not everyone would hand a armed teen something important to them, nor give more scorn to the principal that failed him. Not everyone would feel bad for hurting people that were planning to murder you. Samantha was failed, Tobias was failed, Owen was failed, and SO was Spencer.