Kidnapped Deer Escape

You are lucky to live in the days of knights and kings, because at this time the real men lived. Your king is very fond of animals, and he built a zoo at the castle. He let everyone here. One day, he lost his favorite reindeer. King said that the present castle and a lot of gold to anyone who finds his pet. You agreed. You must collect all the clues and find the trail of the villains. Return the poor deer home.