A time machine plummets Tim and Martin back to the Gold Rush Days.

Tim and Martin search for their time machine.

Tim and Martin return, via time machine, to early Hollywood where Martin once starred as a sheik.

Uncle Martin captures a surprising photo of Tim using his fortune-telling camera. Both are astonished when the image reveals Tim at the altar with an unidentified woman whose back is turned to the camera.

Martin's latest machine effects a mind swap with Mrs. Brown.

Tim's I.Q. soars when he downs Martin's brain-power pills.

A mineral deficiency gives Martin the Midas touch everything he touches turns to gold.

Uncle Martin, packed in a tiny bottle, is bound for the Middle East.

Martin's benevolence-inducing light has an unusual effect on Brennan.

Martin accidentally pulls an alien spaceship out of the sky.

The time machine brings Tim, Martin and Mrs. Brown face to face with Jesse and Frank James.

Disguised as a 70-year-old, Martin becomes a night watchman.

Double trouble - Martin's duplicating machine creates two Tims.

A Martian pill turns Mrs. Brown into a crusading crime-fighter.

Tim is arrested for theft when he's forced to help two jewel robbers.

Rumors spread that Martin is working on a secret Government project.

The unexplained presence of "Uncle" Martin jeopardizes Tim's claim to an inheritance.

An invisible Martin is photographed capturing an escaped criminal.

A short circuit in Martin's transmitter puts him and Tim on nationwide TV.

Martin helps Mrs. Brown's brother build a robot that does household chores.

In a department store, Martin is frozen into a mannequinlike pose.

Tim is kidnapped by sinister CRUSH agent Butterball.

A gypsy curse causes Mrs. Brown to drop anything she picks up.

Trouble begins when Martin's Martian nephew lands on Earth and tells everyone where he's from.

Martin turns himself into a liquid and is lapped up by Tim's dog.

Trouble begins when Tim contracts a Martian virus.

Martin's personality altercator turns Mrs. Brown into a thief.

Martin summons Leonardo da Vinci for help in fixing his spaceship.

A mosquito bite causes Martin to act like a race horse.

A beam from Martin's regenerator gives Mrs. Brown power to foresee the future.

Martin's molecular reassembler turns a squirrel into a human.

Tim tampers with history when he goes back in time and talks the Indians out of selling Manhattan.