A major recycling campaign turns sour when money goes missing.

Then a security guard from the local plastics corporation ends up face down in some machinery and very much dead. Frank and Joe Hardy are determined to track down the saboteur - who is equally determined to stay hidden - and with time running out, it's a question of who will reach their threatened expiry date first...!

Age - 10
Grade - 3rd
Author - Franklin W. Dixon
Format - Paperback
Pages - 160
Dimensions - 17.6 x 11.1 x 1.0 cm