"Metamorphosis" by Charles V. De Vet is a science fiction novel written in the early 1960s. The book revolves around a protagonist’s search for his former best friend, Howard Zealley, who has undergone a radical transformation due to a symbiotic infection that grants humans enhanced abilities at a grave cost. Set in an era of advancing technology and interplanetary tensions, the story delves into themes of identity, the human condition, and the moral implications of scientific experimentation. In the narrative, Max Calof embarks on a relentless quest to find Howard Zealley, following a trail of clues that reveal Zealley's drastic changes after being infected on a mission to an uninhabitable planet. As Max encounters various obstacles and confronts Zealley's dark and egotistical transformation, he learns about the perils of their symbiotic relationship and the impending doom it poses not only to themselves but to humanity as a whole. The story builds tension as Max navigates treacherous encounters while grappling with the existential implications of their shared experience and the choices made in a quest for survival and redemption. The climax reveals a harrowing encounter between Max and Zealley, culminating in a bitter reflection on the choices that lead them down divergent paths. (This is an automatically generated summary.)