The Detective's Protégé and The Adlet

Henry, not an average high school student. His father was a Detective, he was taught about what to look for and how to solve any case. When Henry was 14 his father got killed during a raid. His mother had moved out about 10 years prior to then. He had been living on his own for a year and is now heading to his final years of high school. He was very observant about everything and when he saw a girl who always wore a hat. He became suspicious about why she did. He knew there was something about why she wore it, even though everyone else saw it as normal since she was from a warmer climate and now in a colder one.
Ellen, she's one fourth adlet and because of it she had less noticeable features. She retained the ears, tail, and her hair was the same texture as a wolf's long hair. She looked normal other than that though, but because of that she needed to wear a hat or something to cover her head. She knew there was a student who was suspicious of her, he saw through what she was doing. She decided to ignore her, but being in the same grade makes it hard to do. She herself is not a full fledged adlet yet due to her inability to want to consume human flesh and drink their blood.
There's been a series of homicides that have been happening lately, but are strange. In all of the cases the victim was slashed open by four claw-like objects, they had lost half of their blood, and had bite marks all over their bodies. No prints have been found, but tracks of wolves have been found on all of their victims. Detectives ruled it as an attack from wolves, but I know that even wolves don't go this far into the city. Henry has been interested in this case because it is the only one that has stumped him knowing that it doesn't add up to normal standards. With his new partner he will solve these and many more cases to come.