Mel and Bill go on the case to bust up an international spy ring.
With Bill set to testify as a key witness in an important government trial, Mel discovers a time bomb in their apartment and sets out to find his partner—who is tinkering in the garage.
The Bureau hatches a scheme for Mel and Bill to infiltrate the apartment of an actress who holds a list of high-ranking espionage agents.
Mel is thrown from Bill’s car during an accident, which forces the pint-sized special agent to avoid the pitfalls of both man and beast in order to stay alive.
Mel and Bill go on a surveillance job to uncover a local casino owner’s ties to an East German communist spy.
When shortages in a rare-earth mineral are reported at a chemical plant in Buffalo, Mel and Bill go undercover to prevent the element from getting into the wrong hands.erator.
Mel and Bill are out to stop an enemy agent from transporting secret documents via carrier pigeon.
There’s danger at every turn when Mel and Bill sneak into a spy network’s well-fortified compound in order to find and break a new espionage code within 36 hours.
Bill and Mel head to the Caribbean to find the black box from a downed U.S. missile.
In exchange for seven American airmen who were forced to land in China, the Bureau agrees to send Mel and Bill to Hong Kong to stop a smuggling ring—headed by a fellow American—that sneaks Chinese nationals away from the mainland.
Bill and Mel suspect a pharmacist—who is also an ex-con—is up to no good, so they investigate the pharmacy where he works.
Foreign agents lure Bill and Brownie away from the apartment in order to kidnap Mel and discover what caused him to shrink.
Tipped off that stolen art treasures from an Egyptian museum are being smuggled into the U.S., Mel and Bill go into action at a local nightclub to catch the criminals.