Tim and Martin search for their time machine.
A time machine plummets Tim and Martin back to the Gold Rush Days.
One of Martin's odd gadgets makes Mrs. Brown two-dimensional.
The time machine takes Tim and Martin back to 13th-century England.
In Mexico, Tim and Martin witness the opening of an ancient box.
Mrs. Brown is deluged with suitors after dousing herself with Martian "irresistible spray."
A Martian drug turns Mrs. Brown into a piano virtuoso.
Uncle Martin mistakes a hobo, Shorty Smith for a Martian Scout and brings him home. Shorty quickly becomes accustomed to the comforts of life and when Martin learns the truth, Martin and Tim have a hard time getting rid of him.
In the desert, a gun-wielding camper spots Tim and Martin working on the spaceship.
Despite warnings, Tim touches Martin's antennae - and disappears.
Tim accidentally gets mixed up with a fleeing secret government agent who is involved with a deadly organization called CRUSH. This leads Tim to go undercover with Uncle Martin by his side helping him stay out of trouble.
Mrs. Brown's electronic bed receives brain waves from Martin.
On Martian Mother's Day, Martin spots his mother's lookalike.
Martin feels that his youth is fading and asks Tim to help him rejuvenate himself with the aid of Black Light. However, things go awry when Tim screws up the process and Martin gets turned into an infant.
Tim is placed on the Teacher of the Year selection committee.
An experiment goes haywire, turning Martin into a walking magnet.