Wonder Woman#104(1959)

Wonder Woman is out with Steve Trevor in her civilian guise of Diana Prince. They come across a "weight-and-fate" machine that will tell you your weight and provide a printed card with your fortune. Steve goes onto it and his card reads "The biggest surprise of your life is right beside you!", which Diana tries to write off as bunk but is secretly concerned that by sheer coincidence the card may compromise her double identity. Steve convinces Diana to go onto the machine herself and her fortune reads "Today will be your trial by fire". As Steve begins to speculate what her fortune may mean, Diana dismisses it as simple superstition and refuses to entertain what her future has in store for her. When a store having a fire sale is being robbed, Steve tells Diana to get out of his Jeep while he goes to tackle the crooks. This allows Diana to change into Wonder Woman, unnoticed, to tackle the crooks, which she manages to accomplish and quickly changes back into her Diana Prince identity without anyone, let alone Steve, being any wiser. While driving on, the two happen past a explosives works factory where a giant experimental firework is being worked on. They notice the workers fleeing when the fuse is accidentally lit. Steve goes in to see if he can use his anti-demolition expertise to help put out the fuse. Left alone, Diana changes back into Wonder Woman and takes the giant firework off into the air by using her lasso as a propeller. With too much sky traffic to allow for safe detonation in the air, Wonder Woman leads it down into the ocean below, where she spots an enemy sub. The sub fires a nuclear missile at the giant firework and Wonder Woman manages to get away just as the two impact and explode. When she surfaces, she spots two fire boats trying to put out a blazing ship fire and helps out by creating a massive waterspout that douses the flames. Returning to shore, she changes back into her civilian guise and returns to Steve, who is still oblivious to the fact that Diana is Wonder Woman. Trying to deflect questions about her fortune, Diana and Steve go to check out a flea circus and stumble into the insane owner's plot to have a great new attraction: using a shrinking ray he shrinks Steve and Diana down to size and places them in his flea circus, where he forces them to fight a firefly. Steve is knocked out early on, giving Diana an opener to change into Wonder Woman, corral the firefly and force the owner to return them to their original size. Wonder Woman changes back into her civilian guise before Steve can revive and discover her double identity. Next, as they drive on, they spot an apartment fire, prompting Steve to stop and see if there is anything he can do to help. Once more allowed to change into Wonder Woman, Diana saves a woman trapped in the building. Later, Steve begins to realize that every time Diana is supposed to have a "trail by fire", Wonder Woman shows up to save the day. Wonder Woman quickly convinces Steve maybe this is what his fortune had meant that his big surprise would be that Wonder Woman would come to the rescue each time. Steve is satisfied with this, thus preserving Diana's double identity.