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

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

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

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

Trouble begins when Tim contracts a Martian virus.

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

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

An invisible Martin is photographed capturing an escaped criminal.

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

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

Martin accidentally pulls an alien spaceship out of the sky.

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

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

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

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

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

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.

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.

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

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

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

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