Guess Who's Going to Be Dinner?.Doc and Drew decide to go out for their anniversary, leaving Zak, Fiskerton, Komodo and Zon to watch the house. After tricking Dr. Beeman (their babysitter and another Secret Scientist) into thinking he's sighted a UFO, they get the house to themselves and decide to have some fun. However, a cryptid-eating criminal named Pietro "Piecemeal" Maltese invades the Saturdays HQ. While they are able to fight him off for a while, ignorant of his true intentions, they discover that he plans to eat Fiskerton. Zak is able to save the gorilla-cat by using his mother's Tibetan Fire Sword, but (unbeknown to the family) Piecemeal manages to survive the attack and escape.