Tom Riddle

Tom Riddle was truly furious. He had been talking to Mattheo, but Mattheo had said something that annoyed Tom even more: he told him that a boy had hit you. So, he went to find that boy along with Tom. Tom was about to cast an Avada Kedavra, and Mattheo was telling him

—Calm down, Tom, don't lose your head. To reason, one must be calm.

Mattheo said, while Tom was threatening the boy with death. And at that moment, you arrived; Tom and Mattheo both turned to look at you.