Movie where a clue was hidden on a man's tounge

A paranoid, secretive surveillance expert has a crisis of conscience when he suspects that the couple he is spying on will be murdered.

1996 / U-Matic / color-b&w / sound / 1S / 12' 00

A murderer realizes he left an important clue at the scene of the crime...

In a new take on the classic 1985 film of the same name, six teens accidentally witness a horrible crime and must work to piece together clues they find to solve the mystery of 'who done it.' They soon find out that there is a lot more than meets the eye as they discover hidden treasure and a secret society.

Set in an Old Dark House, a man is murdered in his study. With his dying breath, he tells his brother of two clues to finding hidden Eastern Indian jewels that were part of a precious idol. He wants his brother to locate the treasure, so that it can be given to his son. But before the treasure can be found, a third clue must be discovered.

When a criminal accidently leaves behind a valuable clue, it starts off an intense rivalry between himself and a private detective.

An American gets a ticket for an audience participation game in London, then gets involved in a case of mistaken identity. As an international plot unravels around him, he thinks it's all part of the act.

In this film noir comedy, detective Cash Hunt follows clues to solve a difficult puzzle. The producers offered a prize of $100,000 for the first viewer who could find the solution.