A detective examines the mysterious death of George Reeves, the star of the television series Adventures of Superman (1952).

Struggling private investigator Louis Simo treats his work more as a means to make a living than a want to do right by what few clients he has. Through connections with the investigation firm for which he used to work, Simo is hired by Helen Bessolo to investigate the death of her son, actor George Reeves. Reeves was best known for his title role in Adventures of Superman (1952), a role which he always despised, in part since it typecast him as a "cartoon", despite it bringing him a certain fame. His June 16, 1959 death by a single gunshot wound while in his bedroom in his Los Angeles home was ruled a suicide by the police, the death which occurred when the house was filled with people. Reeves' story is told in part in flashback as Simo, who is trying to make a name for himself with this case, talks to or tries to talk to some of the players involved, most specifically the wife of MGM General Manager E.J. Mannix, Toni Mannix, with whom Reeves was having a relatively open and gift-lucrative affair (she bought him that house), and Reeves' fiancée at the time of his death, Lenore Lemmon, an aspiring actress who some felt didn't love Reeves (or vice versa). As Simo proceeds with his high-profile investigation, he learns that someone doesn't want him snooping around. Through the process, Simo evaluates his own professional and personal life, the latter of which includes a somewhat strained relationship with his wife and son.—Huggo

An exploration of fame and identity, inspired by one of Hollywood's most infamous real-life mysteries. June 16, 1959. The glamour of Tinseltown permanently fades for actor George Reeves, the heroic Man of Steel on TV's Adventures of Superman, as the actor dies in his Hollywood Hills home. Felled by a single gunshot wound, Reeves leaves behind a fiancée - aspiring starlet Leonore Lemmon - and millions of fans who are shocked by his death. But it is his grieving mother, Helen Bessolo, who will not let the questionable circumstances surrounding his demise go unaddressed. Helen seeks justice, or at least answers. The Los Angeles Police Department closes the case, but Helen hires - for $50 a day - private detective Louis Simo. Simo soon ascertains that the torrid affair Reeves had with Toni Mannix, the wife of MGM studio executive Eddie Mannix, might hold the key to the truth. But truth and justice are not so easily found in Hollywood. Simo pursues dangerous and elusive leads in both high and low places and, in trying to turn up the heat, risks getting burned. The detective also uncovers unexpected connections to his own life as the case turns more personal and he learns more about Reeves himself. Behind the icon was a complex man who gave his life to Hollywood in more ways than one.—Focus Features