Mystery of the Vanishing Plastics
from "The Hardy Boys Detective Handbook (Revised Edition)" (1972)
Plot: The Hardy's go undercover at Domas Plastics to find out who is stealing plastic products.
Review: This is the first story in "The Hardy Boys Detective Handbook". It's a short-story that takes place over 2 weeks as the Hardy's go undercover at Domas Plastics Company to figure out who has stolen some moulds, and truckloads of other stolen stuff.
For a short story it is pretty good, and also informational. Of course it's been nearly 50 years since this story was revised, so a lot could've changed from the early 70's.
And "The Hardy Boys Detective Handbook" is now out-Of-print.
It's been so long since I read that I was really wondering about the title for a second, like it was one I had missed somehow. In any case, I like The Hardy Boys Detective Handbook and its collection of short stories.