Reporter Tim O'Hara, while covering a flight of the Air Force X-15, finds a spaceship that contains a genuine martian. The martian is a professor who specializes in the planet Earth and now has to repair his spaceship before he can go home.

There is dual girl trouble in the O'Hara household. George, the dog who Tim is looking after for Mr. Burns, is in love with Chloe, the dog from next door. Through trying to get George and Chloe together, Tim falls for Chloe's owner, Marsha …

Martin comes down with a common cold, which is not so common but rather debilitating for Martians. Meanwhile Tim is sent to Trimbles Department Store to review their outer space exhibit. Trimble, a major advertiser in The Sun, tries to buy …

Martin reads about a $2 billion American space program, a program he knows is doomed for failure. Not wanting to see the American government waste $2 billion, Tim writes himself a fake letter to the newspaper which includes Martin's nightti…

Renowned scientist Professor Newton Jennings posits that life no more advanced than amoebas or jellyfish can exist on Mars. Martin helps Angela write a report refuting Jennings claims, which quickly gets her a failing grade. When Martin's a…

To get some rarefied air, Martin goes atop a water tower. Passersby, including the police, think he's a jumper and he's promptly sent to the psychiatric ward of the hospital. Martin thinks he can quickly exit the hospital by reading the psy…

Martin allows himself to experience an emotion foreign to Martians: love at first sight. He falls hard for Peaches Ancream (Kathie Brown), that being her real given name since her father had a sense of humor. It is also an appropriate name …

Tim talks Martin into temporarily giving him a Martian power. Martin decides to give him the power of levitation for a 24 hour period. When he thinks the power practically useless beyond performing mere parlor tricks, Tim asks for another, …

When the junk men come by, they mistakenly empty Martin and Tim's garage instead of Mrs. Brown's, and in doing so take Martin's space ship. Mrs. Brown has no idea the name of the junk yard, but there was a witness to the incident: Booboo, a…

When Martin almost gets a parking ticket, Tim thinks it might be a good idea if Martin legitimizes his Earthly driving by getting a driver's license. Down at the Department of Motor Vehicles, finger-printless Martin has to do some fancy wor…

Martin needs the hardest substance possible to repair his spaceship, the substance he has in mind is silibalt, an alloy of silicone and cobalt but one that has not yet been invented on Earth. To make some, he needs a cyclotron. Rather than …

Tim is pursuing who seems to be the unattainable Cynthia Parker. Through reading her mind, Martin finds out that Cynthia is passionate about the classical arts whether it be music, literature or art, and she figures Tim is not, which is the…

The O'Hara's have new neighbors, the Richmonds, within the family being young Stevie and his grown up sister Jennifer. The foursome go on a picnic to Sunset Mountain, since Martin needs to pick up some bling, an alloy located there but that…

Tim's cousin Harvey is coming for a visit, which means Martin is going to have to go into hiding since Harvey would know that Tim has no Uncle Martin. And they have to keep Mrs. Brown away from Harvey since she would definitely spill the be…

The stupidest idea Martin has heard of since he's been on Earth: Rosemary Willis leaving her cat, Max, $650,000 in her will. Morton Beanbecker, the lawyer for the estate, is threatening Tim with a lawsuit if he continues to editorialize abo…

Martin can make it back to Mars since Mars has deviated from its regular orbit temporarily and is thus closer to Earth than usual. Martin has a 10 hour window of opportunity. Just as he is about ready to leave, he slips down the stairs and …

Something is causing Martin's metabolism to go haywire. In succession, he loses control of his levitation finger, he magnetizes his clothing, he levitates, he becomes electrically charged, he shrinks and then he disappears. He finds out the…

Martin and Tim are on their way to interview Professor Eugene Downey, the foremost expert on rocket fuel - Martin thinks the professor can assist in getting him back to Mars - when Martin is hit on the head with a monkey wrench. Martin gets…

At the museum, Martin discovers that the long-time curator, Wilbur Canfield, is very unhappy. He has just acquired a new expensive Egyptian piece for the museum, but the museum's board is questioning the authenticity and therefore merit of …

Martin wants to help Tim with the household expenses, and without a money earning activity, decides to sell art he's currently painting to relive boredom. Martin can paint in the style of any famous artist. Mr. Green of the Green Gallery no…

The Inter-Galaxy Corporation is launching a rocket to either Mars or Venus. Martin needs to convince them to choose Mars, so that he can stowaway and get home. J.M. Buckley, Inter-Galaxy's President, is an indecisive man, but is highly supe…

Tim discovers that Martin's antennae can pick up radio and television signals and other things. While Martin's asleep, Tim tunes him into a police frequency hoping for a newspaper scoop.

After Martin makes Tim miss a deadline, Martin decides to help Tim get an exclusive interview. Jakobar, the rogue leader of Kobima, is the story's subject matter. Martin is a legend in Kobima and has inside knowledge of Kobiman legend since…

Mrs. Brown is taking a course on how to be a private detective, and her first assignment is to prepare a dossier on an unsuspecting person. Her choice of subject is Martin. Of course, Martin knows what she's up to, but he is still a bit con…

Pete Dudley, a real estate salesman, convinces Mrs. Brown that she should sell her ramshackle of a house, which causes a problem for Tim and Martin, especially in hiding the spaceship. Dudley already has prospective buyers, Edgar and Emily …

Since Tim is unavailable for an outing, Martin asks Mrs. Brown out on a "date". Mrs. Brown herself can't make it since surprisingly she already has a date for that evening. Martin feels dejected, but he doesn't know why. Tim lets him know t…

Martin needs to electrically charge himself for his trip back to Mars. However he overcharges himself. He needs to rid himself of the excess electricity, and when he initially tries to discharge it, he blacks out half of Los Angeles. Martin…

Martin can't work on his spaceship because neighborhood boy, won't leave him alone. Martin is so stressed that his antennae get stuck in the up position and he loses some of his powers.

Martin needs to fly his space ship, which is deteriorating due to inertia. Tim's fear is realized: Martin's flight is spotted as a UFO. Martin needs to take another flight, but Mrs. Brown calls in the authorities - Jack and Jim being their …

The Earthly environment is causing a vitamin deficiency in Martin. He draws on energy and vitamins from everything and everyone around him. The effect on things is for them to go haywire. And if people look him in the eyes, they will fall a…

Mrs. Brown's niece, Paula Clayfield, comes for visit. A former child prodigy, Paula has always relied on her brains to mask insecurities in her personal appearance. Despite her Plain Jane looks, Paula does have a boyfriend, Dr. Edgar Edgart…

During an electrical storm, Martin gets an affliction called popsy, which causes him to appear and disappear uncontrollably. With Tim's help, Martin needs to long ground himself electrically to cure the popsy. Just as he does so, Mrs. Brown…

Martin finds that he is prematurely aging due to the increased gravity on Earth compared to Mars. Thus he goes through some anti-gravity therapy, which in turn causes havoc for those around him.

Martin convinces Tim to use his connections as a reporter to get Martin a tryout as the astronaut for a Mars destined rocket, privately financed by Omar M. Keck. Despite a slew of younger stereotypical astronaut types vying for the job, Mar…

Tim and Mr. Burns' nephew, Freddie Carson, are in the running for promotion to journeyman reporter at the newspaper. After finding out that Mr. Burns is a gourmet, Martin decides that a way to swing the tide in Tim's favor is to cook Mr. Bu…

Tim gets mad at Martin for "disappearing and spying" on him while he has a date at the apartment. To make up for this, Martin covers for Tim when he goes missing from the office and Mr. Burns calls the apartment looking for him. Martin goes…

A toothache of his "eye" tooth causes "eye" problems for Martin: he can't see. Tim takes him to see his dentist, although Martin doesn't have typical human teeth. He needs dental expertise and some dental powder without the dentist actually…