The untold fourth year of the Enterprise’s legendary five-year mission continues! The Klingons have discovered what appears to be a Preserver obelisk, but can the Enterprise prevent them from unlocking its secrets before it’s too late? And what of the Organian truce? The answer lies within!
Star Trek: Year Four - The Enterprise Experiment #4
Authors: D.C. Fontana, Derek Chester, Gordon Purcell