The Family Secret! was episode 41.
When searching the family archives for one of Lady Baden-Baden's literary projects, Bert and Cedric find papers for the adoption of a "C. Sneer" and believe Cedric has been adopted. They later learn that it is his father, Cyril, who was adopted. Meanwhile, the Pigs hypnotize Cyril for similar information. However, they take advantage of this to get raises. They also see to it that a hypnotized Cyril Sneer drives them and his limo into the local swamp.
Melissa spearheads a "Who's Who" book of Evergreen Forest denizens, although Cyril's information is missing. To get to the bottom of this conundrum, Cedric elects to investigate the matter by virtue of the Sneer library. In order to get their much sought-after raise, the Pigs place Cyril under a trance via hypnosis. Of course, Bert erroneously "discovers" that Cedric is adopted and he tries to get clarification from Cyril on the matter.
At long last, Cyril reveals the truth to Cedric, saying he's the adopted one. We therefore see clarification and all goes well. He tells Cedric that times were different when he was younger and that being adopted was kept a secret and had wanted to tell Cedric he was adopted but had kept putting it off and the longer he waited the harder it got. Cyril also tells Cedric he was worried his son would think he wasn't a real Sneer in which Cedric tells him he's the greatest Sneer ever,Cyril tells Cedric that means a lot to him.
- According to Lady Baden-Baden, the Sneers were one of the first to leave the old country and settle in the Evergreen Forest.
- The portrait of Excalibur Sneer is seen again, as well as the sword he was knighted with.Among the names of the Sneer Dynasty Cedric finds are Reginald Sneer (born 1698) and Montgemory Sneer (Admiral in the King's navy in 1812).
- Many female aardvarks in Cedric's fantasy look slightly similar to Sophia Tutu.