Wikimedia Commons/The Gray House Prime Vide Celebrity A top 5 hit on Prime Video, this Civil War spy drama thrives despite mixed reviews. Discover the series captivating audiences. April 20, 2026 AceShowbiz - The Gray House is making notable waves on Prime Video, securing a spot in the platform's top five streaming shows in the U.S. despite receiving a mixed critical reception. This eight-part Civil War spy drama has attracted a solid audience, underscoring its appeal beyond the initial reviews. As of March 5, 2026, FlixPatrol's U.S. streaming rankings place The Gray House at No.