Best Mystery Movies of 1981

Kermit and Fozzie are newspaper reporters sent to London to interview Lady Holiday, a wealthy fashion designer whose priceless diamond necklace is stolen. Kermit meets and falls in love with her secretary, Miss Piggy. The jewel thieves strike again, and this time frame Miss Piggy. It's up to Kermit and Muppets to bring the real culprits to justice.

An honest marshal in a corrupt mining colony on Io, Jupiter's sunless third moon, is determined to confront a violent drug ring even though it may cost him his life. After his wife angrily deserts him, he waits alone for the arrival of killers hired by the company to eliminate him.

Twenty years ago in the sleepy mining town of Valentine Bluffs, a fatal mining disaster occurred on Valentine's Day while some of the crew was decorating for a party. The sole survivor of the accident killed the remaining crewmembers and warned the town not to celebrate Valentine's Day again. When a group of teenagers decides to defy that order, a murderous maniac in mining gear begins dispatching townsfolk in bloody and creative ways.

A truck driver plays a cat-and-mouse game with a mysterious serial killer who uses a young female hitchhiker as bait to lure victims on a desolate Australian highway.

Story of a young woman's murder and the people who become involved with it.

A mad cap private-eye caper about a team of detectives who are following, and are being followed by, a group of beautiful women.

Virginia is proud that she belongs to a clique. The best students at a private school. But before her 18th birthday, a grueling set of murders take place and her friends are the ones who are falling prey. Could it be her? She suffers from blackouts due to a freak accident one year earlier. We soon learn the truth behind her accident and what is going on...

A masked killer, wearing World War II U.S. Army fatigues, stalks a small New Jersey town bent on reliving a 35-year-old double murder by focusing on a group of college kids holding an annual Spring Dance.

Daryll Deever is a janitor in an office building in New York, and a big fan of TV news reporter, Tony Sokolow. When a rich man is murdered in Daryll's building, Tony comes to cover the story and Daryll introduces himself to her. Thinking he may know something about the crime, Tony pursues him, and in order to keep seeing her, he pretends that he does. As the two of them play this game, the killers are watching, assuming that Daryll and Tony both know more about the crime than they do.