Episode Number: 21, according to third season broadcast order and 23 according to third season production order. Episode number 43 according to “The New Adventures of Wonder Woman” run and 45 according to the series production order.
	Production Number: 166853.
	Air date: Tuesday, May 29, 1979.
	Writer: Anne Collins.
	Director: Leslie H. Martinson.
	Other Titles: In Spanish: “El Chico Que Conoció Su Secreto, 2da. Parte” ("The Boy Who Knew Her Secret Part II") / In German: "Die Pyramide aus dem All II" ("The Pyramid From Space II") / In Japanese (Romanji): "Ningen wo sihaisuru tetorahedoron" ("Tetrahedron-Controlled Humans") / In Italian:
	Other Titles: In Spanish: “El Chico Que Conoció Su Secreto, 1ra. Parte” ("The Boy Who Knew Her Secret Part I") / In German: "Die Pyramide aus dem All I" ("The Pyramid From Space I") / In Japanese (Romanji): "Ningen wo sihaisuru tetorahedoron" ("Tetrahedron-Controlled Humans") / In Italian:
"Il Ragazzo Che Conosceva Il Suo Secreto II" ("The Who Knew Her Secret II") / In French: "Curieux Danger - 2è Partie" ("Curious Danger - Part II").

In Part l, Diana Prince (LYNDA CARTER) flies to Crystal Lake, where peculiar tetrahetrons are overtaking many of the small community's residents. One boy, Skip Keller (CLARK BRANDON), whose parents have both been overtaken by this strange power, befriends Diana Prince during her investigation of Crystal Lakee Upon chasing her into the woods, Skip witnesses her transformation from Agent Diana Prince to WONDER WOMAN.
Wonder Woman, not aware that her transformation has just been witnessed, continues her pursuit of Pete (TEGAN WEST). She whirls her lasso and stops him in his tracks. Wonder Woman explains that she already knows that there are ninty-nine of the beings and that they are from another world. Pete explains that there is an enemy of their people hiding on Earth who must be terminated. Wonder Woman insists that they will have to take their war games elsewhere, but Pete counters by declaring that the being is totally evil, devoid of morality, and responsible for terrible crimes throughout the universe. He further adds that the souls of the people whose bodies they have borrowed can and will return only after the mission is completed.
Wonder Woman is now curious as to who this creature might be. Pete tells her that he is not like them at all. He can become whatever he wants, whenever he wants, much like the strange mouse in Dr. Jaffe's (BERT REMSEN) observatory and the "Cameron" (MICHAEL SHANNON) who seems to follow Diana Prince in Crystal Lake. Wonder Woman, however, is not aware at this point that the mouse vanished or that the real Cameron is back with Dr. Jaffe. Wonder Woman is puzzled since it would seem that these beings are looking for a person who can disguise himself as anyone or anything. How will they find him? "He knows he's in danger." Pete declares, "as long as we're here. He'll find us." Wonder Woman lets him go back to his "business," but not before he agrees to pass the word that Diana Prince, Cameron Michaels and Skip Keller have become one of them. They are to leave the three of them alone.
Inside an abandoned building, a different Pete, one who furtively forces the placid expression on his face, smiles sinisterly as he slaps a wooden board against his palm. He looks on in trepidation as he sees a pyramid, made up of the tetrahedrons. Mr. Keller (JOHN MILF0RD), Skip's father, supervises as a few more tetrahedrons are added. He then orders that the word be passed that only four more pieces are left to be recovered (one of which is in Skip's knapsack as established in Part 1). Suddenly, the real Pete groggily enters and announces that the enemy is among them. They look up at the fake "Pete" who suddenly turns into a mean, snarling dog. The dog finally turns tail and leaves as Keller declares, "He knows it won't be much longer."
Back at the motel, Diana tries to reach Steve but her attempts are unsuccessful as the lines out of Crystal Lake are blocked. So, too, are the roads, as the ninty-nine beings have isolated the area. Steve (LYLE WAGGONER) and Jaffe are panicked in Washington. Jaffe decides that he will venture to Crystal Lake and sacrifice himself if it becomes necessary. It is now when Jaffe introduces his assistant, Cameron Michaels, to Steve that the audience has proof that the Cameron with Diana is really an imposter.
At the Crystal Lake School, the enemy being now poses as Skip's friend, Mel (LENORA MAY). He tries to find out where Skip has hidden the tetrahedron for the beings will not be able to transport him back home without all ninty-nine pieces. If the enemy has one -the one that Skip has -then he will prevent his sentencing. Suddenly, he/she is gone. Diana spots the same man who she chased in Part 1. He jumps into a car and races off. Diana whirls into Wonder Woman and continues her chase. The car finally crashes into a tree. The car is suddenly empty but a "vixen" peers at Wonder Woman through the grass. She does not see it.
Skip talks to the real Mel but it isn't long before she realizes that Pete lied. Skip is not one of them. Skip still believes that she may not be one of the beings, but that notion is put to rest when she shouts to a nearby friend. The friend tells Mel that it won't be long before the others remove Skip. Diana and Cameron meet. He is suspiciously vague as to his whereabouts during the time that they have been separated. He offers her a drink -which she accepts -into which he has placed a sleeping drug. As her eyesight blurs she sees "Cameron" become Pete, and the mouse, and Skip. He then turns back into Cameron and explains that the tetrahedrons, when assembled into one pyramid, like the one in Dr. Jaffe's sketches, can imprison him long enough to return him for sentencing. When Diana pries her eyes open she is staring at herself. "Cameron" now informs her that he, too, knows that Diana and Wonder Woman are one in the same. He now hypnotizes her to forget that she is Wonder Woman.
Keller is concerned that the missing piece may be in Cameron's hands. If it is, then the beings will be doomed to Earth forever. When Skip visits Diana she is strangely remote and announces that she is returning to Washington. Skip finds her abrupt change in attitude most discouraging. He is truly alone. As the chain of events continue, Diana slowly regains her memory. She begins to understand why Skip told her that he knows that she is Wonder Woman. Dr. Jaffe arrives in town and finds the Piece that Skip has been holding. He brings it to the abandoned building where the pyramid is being constructed. He offers himself and the final piece. Diana now remembers that she is, in fact, Wonder Woman. She races to the building where a beast of a man, "Cameron", challenges her to an incredulous battle. She forces him into the pyramid which amazingly absorbs his body. Now the pyramid begins to glow as it dissolves into thin air. The people gathered around stand still throughout. Gradually a glow appears around their heads until there is a great burst of light. Suddenly, they all come back to normal -as if nothing had happened.
Wonder Woman now cautions Skip that everybody needs their privacy. He understands what she is saying. Oddly, after all is back to normal and Diana is safely back in Washington, Skip listens to his tape recorded memoir of the day when he discovered that Diana and Wonder Woman were one -but he can't understand why he would have recorded that incredible fact.

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