William F. Nolan 
Logan’s Run: Last Day #4 [EPUB ebook] 

Things are finally dropping into place for Deep Sleep Operative Logan-6 on his covert assignment to find the mysterious Ballard and destroy Sanctuary. But even the most careful plans can go askew. After his cover is blown, not only does Logan risk death, but he must also make a sudden choice that changes him from the hunter to the hunted. In this pulse pounding chapter of LOGAN’S RUN: LASTDAY, Logan soon learns that going rogue can be costly.