While the tabloids and fan publications portrayed the Nimoys as a “close family,” to his son Adam Nimoy, Leonard Nimoy was a total stranger. The actor was as inscrutable as the iconic half-Vulcan science officer he portrayed on Star Trek, even to those close to him. Now, his son’s poignant memoir The Most Human explores their complicated relationship and how it informed his views on marriage, parenting, and later, sobriety. Despite their differences, both men ventured down parallel paths: marriages leading to divorce, battling addiction, and finding recovery. Most notably, both men struggled to take the ninth step in their AA journey: to make amends with each other.