What's that book based in the future...?

"Logan's Run" by George Clayton Johnson

http://www.amazon.com/Logans-George-Clayton-Johnso...

""Logan's Run" is a real classic of the 60's. The authors develop a world where no one lives past youth; at age 21, to avoid overpopulation (and presumably war and other social issues) one reports to a Sleepshop to be drugged to death. To police this policy, a liquid crystal flower is inserted into the palm of each infant, and it changes color with your age, from early childhood to child to youth to finally blinking black-red (last-day) and then black. Sandmen are dispatched to capture runners who don't report to the Sleepshop.

Logan, a Sandman, finds than on his Lastday, drugs and sex don't replace the nagging feeling that life is to be lived with more than 21 years of hedonism. He becomes a runner, and like so many others, tries to find the mythical Sanctuary, where one can avoid the mandated death sentence."

Well... I think there is a book called Logan's Run where everyone dies at age 21. I'm not sure what else there is.

Logan's Run... I think they made a movie of it. Everyone over 30 is killed.

Give the best answer to gormengh.