S2·E11 Whodunnit?

Duckula travels to England to hear the will of the Duke of Mallardborough. When it is revealed that the Duke was murdered, many different suspects are interrogated. The investigation begins to focus on Duckula, who is coerced into confessing. He is put on trial and, just before the verdict is announced, the Duke appears, alive, and states that his death was a hoax.