Citizens of San Francisco are stunned by the news that Robert Ironside, the city's hard-nosed, tough-talking chief of detectives, has been shot and left for dead while vacationing at his friend the Police Commissioner's rural retreat. Ironside survives the murder attempt, but the bullet has damaged nerves in his spine, leaving him a paraplegic. Unable to gain reinstatement as chief of detectives, Ironside gets permission to continue investigating criminal cases as a citizen volunteer. With the assistance of two former protegees, Det. Sgt. Ed Brown and Officer Eve Whitfield, and a newly-hired aide/driver, Mark Sanger, Ironside sets out to solve his first case as a civilian by finding the people responsible for the attempt on his life.
A trio of thrill-seeking go-go dancers kidnap a young girl and attempt to seduce an old rancher and his two sons out of their small fortune, but their scheme doesn't play out as intended.
Walt Sherill is attacked and beat down by a group of juvenile delinquents on his way home from work one night. The boys who attacked him are not previously known by the police and are therefore hard to track down. As Sherill starts getting impatient he begins his own investigation. Meanwhile, Detective Sergeant Koleski does his best to track down the culprits.
In the slums of the upper West Side of Manhattan, tensions are high as a gang of Polish-Americans compete against a gang of recently immigrated Puerto Ricans, but this doesn't stop two romantics from each gang falling in love.
Ma Barker and her four sons terrorize the 1930s South and Midwest with a string of kidnappings, robberies and murders, and even get to work with such famous criminals as John Dillinger and Baby Face Nelson.
An ex-major forces a scientist to develop a invisibility formula, with which he plans to create an invisible army and sell it to the highest bidder. However there are side effects to the formula.
Mystery writer Cornelia Van Gorder has rented a country house called "The Oaks", which not long ago was the scene of some murders committed by a strange and violent criminal known as "The Bat". Meanwhile, the house's owner, bank president John Fleming, has recently embezzled one million dollars in securities and has hidden the proceeds in the house, but is killed before he can retrieve it.
A young alien falls for a pretty teenage Earth girl and they team up to try to stop the plans of his invading cohorts, who intend to use Earth as a food-breeding ground for giant lobsters from their planet.
Two musicians witness a mob hit and struggle to find a way out of the city before they are found by the gangsters. Their only opportunity is to join an all-girl band as they leave on a tour. To make their getaway they must first disguise themselves as women, then keep their identities secret and deal with the problems this brings - such as an attractive bandmate and a very determined suitor.