When a person is killed with a gun that doesn't make a sound or flash, the Green Hornet tries to find it before it does any more harm.

The Daily Sentinel is being sued for libel, but the Green Hornet sets out to turn the tables and expose an accident insurance scan.

Pat Allen, a Daily Sentinel reporter, is mysteriously killed by a leopard. While cleaning out his desk, Britt Reid discovers a large diamond that turns out to be a perfectly-manufactured fake, and wonders if Allen uncovered something bigger than he expected. He also finds a transmitter that emits a supersonic tone - the type audible to cats. Britt Reid suspects the leopard must have been trained by someone to kill at that signal. Donning his Green Hornet gear, he sets out to visit Frank Miller, a shady gemologist, for clues leading to Pat Allen's death.

A computer scientist claims he can predict The Green Hornet's next movements, but his "proof" is a series of crimes secretly committed by him.

The gangster who murdered Britt Reid's father returns to the city, after faking his death. A sleazy private investigator is murdered before he can deliver proof, so The Green Hornet picks up the investigation.

Bootleggers intimidate businesses into carrying their liquor brand, so The Green Hornet sets out to locate their base of operations.

Law-abiding citizens commit high-stakes crimes, but have no recollection afterward.

The Green Hornet demands fifty percent of profits from subliminal behavior crimes, but Peter Eden has other ideas.

An art show at Britt Reid's home is heisted and held for a ransom of $1.5 million. The Green Hornet wants a piece of that pie, but watch out, it's piping hot. The high-tech heisters have a mounted laser rifle and itchy trigger fingers.

A Tong war divides Chinatown, and The Green Hornet hopes to divide the conspirators. Meantime, a growing antagonism between Tong leader Lo Sing and Kato jeopardize the Hornet's plans.

A number of top-level racketeers are murdered, each one with a different, unusual weapon. The Green Hornet is contacted about a known list of targets, but before any more information is divulged, his racketeering informant is also killed. The Green Hornet realizes that the key to this mystery is in that list. With his aid Kato, he sets out to discover where it originated and soon finds himself investigating the elite Explorers Club. It quickly becomes obvious that a group of criminals meeting there are the ones behind the murders; and furthermore, that they intend to make the Green Hornet their next target.

Someone is burglarizing high society homes, using a series of "better homes" articles in Daily Sentinel's magazine supplement. Suspicion falls on reporter Mike Axford, and the Green Hornet searches for the real culprit.

The Green Hornet and Kato search for a cache of narcotics hidden aboard a dry-docked ship, and their only lead is in a coma.

Daily Sentinel reporter Mike Axeford wants to smash a construction company insurance racket, but he's furious when publisher Britt Reid suggests he join forces with The Green Hornet.

On the eve of the election, District Attorney Frank Scanlon is marked for assassination by a political rival. When Scanlon considers resigning, The Green Hornet fears losing his trusted ally.

The Green Hornet pits the Black Beauty against a stolen Army tank, when three veterans attempt to help their old captain escape prison.

A Green Hornet impostor begins a terror campaign against the Daily Sentinel. Suspicion falls on the rival Daily Express newspaper.

Britt Reid suspects the attacks on The Daily Sentinel are a smoke-screen for the Green Hornet impostor's real motive.

Kato attempts to find medical attention for a wounded Green Hornet, who preoccupies himself with capturing two rogue police officers stealing loot at crime scenes.

After years of battling each other, Phil Trager and Steve Gant plan to merge their criminal organizations into one mob. The Green Hornet plans to use reporter Mike Axford as bait in order to sow distrust between the two gangsters and rupture their budding criminal alliance.

A visiting prince is ordered to abdicate his throne, or his kidnapped fiance will be murdered. The Green Hornet, in turn, kidnaps the prince to stall him from agreeing to the demands.

The latest addition to the wax museum is the Green Hornet and Kato. But The Scarf feels threatened as he was their most famous occupant and he is a jealous tenant.

Britt finds himself on the run and trying to prove he did not kill a foe, with a gun he was holding as it fired the fatal shot.

Britt's at home, preparing to go out with Miss Case when he hears on the TV a report of aliens landing. Britt thinks it's a mistake but suddenly some people who appear to be from another planet come in to his house. And they make demands among them is for him to call Scanlon to clear the road so that their space craft can land and pick them up. Scanlon does it. They then leave but take Miss Case. They knock Britt and Kato out. Scanlon later shows up to tell them that he just heard that a military convoy is on the road they cleared carrying a warhead. Britt turns into the Green Hornet and follows them. He suspects the leader is not an alien but a disgruntled scientist and he plans to get the warhead.

Mabouse gains possession of the warhead.

The Green Hornet and Kato try to stop an arsonist who is terrorizing the city.