Personally, I LOVED this one. Up there in A & C's top 3 (I'll let YOU figure out the other two) What made this so good...other than the great "invisible" effects (done by John Fulton who was responsible for those in Universal's original THE INVISIBLE MAN), were the boys themselves who almost moved away from slapstick to semi-straight roles here. Bud and Lou play a couple of newly credentialled detectives assigned to a murder case, the suspect being a boxer (Franz is great here) Lou's sequence in the boxing ring...with the assistance of his "invisible assistant" is a side splitter. The effects if anything, top the original film. Their attempts to prove his innocence make for a very entertaining hour and twenty two minutes.
Most A & C fans recall this one fondly.