An obnoxious but brilliant inventor who is thoroughly disliked by his colleagues wins First Prize at an 'invention convention' but is shot in the forehead by an unknown killer as he accepts the award.



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Episode cast overview, first billed only:
Arlene Dickinson ...
Miss Dickinson
Ernest Harding
Karl Schreyer
Ron Gabriel ...
Ronald Nellis
Jeremy Barton
Harlan O'Brian
Julia Course ...
Myrtle Raylin
Timothy Eaton


Detective Murdoch investigate the shooting death of inventor Karl Schreyer who was shot at an inventor's convention. He was very much disliked by his fellow inventors who accused him of stealing their ideas for his own use. He had contacted Murdoch after receiving a threatening note and he was there when Schreyer was shot giving his thank you speech for winning the Eaton Prize for most commercially viable invention in this case, a vacuum cleaner. Murdoch's biggest problem is to figure out just how an assassin could shoot him without being seen. While the evidence points to other inventors as responsible for the murder, an invention by Alexander Graham Bell provides the solution to the crime. Meanwhile, Constable Crabtree tries to commercialize some of Murdoch's inventions. Written by garykmcd

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Crime | Drama | Mystery





Release Date:

31 July 2012 (Canada)  »

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Sound Mix:

(DTS 2.0)


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Did You Know?


This episode takes place in 1899. See more »


An inventor at the "Invention Convention" demonstrates a paint roller. Although the device was actually invented by a Canadian, Norman Breakey (born 1891), he did not invent it until 1940. He claimed to have developed it in his basement while working for Sherwin-Williams. See more »


Detective William Murdoch: Would a guilty person be so guileless?
Inspector Thomas Brackenreid: Only if his guilessness was an act.
See more »

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User Reviews

Invention Convention lots of new inventions
17 April 2015 | by (United States) – See all my reviews

Invention Convention lots of new inventors and their new inventions.

Lots of new products at this inventors Convention consists of a ironing board, a coffee distillator - a machine that makes more than one cup of coffee, a remote that turns on lights, a paint dispenser, a math calculator, a I-messenger, a suction cleaner like a vacuum cleaner, a swivel tray on ball bearings and a Truthizer by Officer Crabtree that is like a lie detector (very humorous). Alexander Graham Bell is also there.

Murdoch is invited to this convention by Karl Shreyer the man that wins a award for his invention. Karl Shreyer is then shot in the head and dies.

This episode is complicated. Murdoch talks to these inventors who all have their own equations about their invention and how Shreyer is killed because no murder weapon was found. Murdoch suspects a conspiracy between the inventors who disliked the man killed.

Brackenreid, Murdoch's boss has a bad toothache and is doing everything to avoid the dentist. He puts cocaine on his toothache and then heroin. The cops are afraid he is going to get addicted to cocaine as in a previous time.

Brackenreid's wife is very assertive and bossy as all the women in this series. They act like they are smarter than everyone especially Dr Grace the coroner. Mrs Brackenreid won't let her husband escape the dentist but he has a plan with Officer Higgins to call him on fake emergencies to get him out of the dentist chair.

Parts of this episode is very humorous and lots of mystery.

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