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Clues Brothers
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This series, the parallel of the Nancy Drew Notebooks, averaged around 70 pages. Written for younger children, the tales are set when Frank and Joe first move to Bayport. Mysteries include a haunted house, stealing a pizza recipe, stealing a new movie-video from the most popular karate movie star, etc. etc.
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One volume, #4, has been re-released under the Aladdin house.
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The Clues Brothers only lasted 17 volumes, but still consists of three distinct formats:
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The Gross Ghost Mystery
The Karate Clue
First Day, Worst Day
Jump-Shot Detectives
Dinosaur Disaster
Who Took the Book?
The Abracadabra Case 
The Dog-Gone Detectives
The Pumped-Up Pizza Problem
The Walking Snowman
The Monster in the Lake
King for a Day
Pirates Ahoy!
All Eyes On First Prize 
Slip, Slide, and Slap Shot
The Fish-Faced Mask Of Mystery
The Bike Race Ruckus
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