Sherlock Yack is the zoo's manager as well as its detective. As soon as a crime is committed, he investigates with his young assistant, Hermione. With her help, he finds suspects, clues and ... Read allSherlock Yack is the zoo's manager as well as its detective. As soon as a crime is committed, he investigates with his young assistant, Hermione. With her help, he finds suspects, clues and proofs - while inviting the young viewer to lead the investigation and find the culprit at... Read allSherlock Yack is the zoo's manager as well as its detective. As soon as a crime is committed, he investigates with his young assistant, Hermione. With her help, he finds suspects, clues and proofs - while inviting the young viewer to lead the investigation and find the culprit at the same time.