Horrid Henry (2006)

Season 1: Episode 10

It's another ordinary day for Horrid Henry, until he notices one thing: Mr. Kill is missing. Using his detective skills, Henry looks around his house and interrogates people who supposedly have the need for revenge against Henry for all of the bad deeds Henry has committed to them. With no progress, Henry decides to talk with the one person who could possibly have a good revenge against him: Perfect Peter.