It's a freaky story no doubt but also kind of weird. Forgot about DNA tests - was the victim totally alienated from his family? I could see someone else did X

It's a freaky story no doubt but also kind of weird. Forgot about DNA tests - was the victim totally alienated from his family? I could see someone else did X under your name and you can't prove you didn't do it but in this case the victim couldn't prove his own identity. At least one of his parents was still living - that parent couldn't or wouldn't come to California? Or was impossible to be contacted?