The Street with No Name

Robert Danker was killed because he was a potential witness who could identify the real criminals. Although the FBI laboratory tests in Washington exonerated him of the murders and bank robbery, the gang still viewed him as a threat since he had been at the same Skid Row hotel and could potentially identify them. After being released on bail under the alias "John Smith" (arranged by Stiles), Danker was stabbed to death, eliminating him as a liability to the criminal organization.

Gene Cordell infiltrated the gang by posing as George Manly, a drifter looking for work. He went to Stiles' gym, challenged one of the boxers to a fight, and impressed Stiles enough to earn cash. When Cordell was later arrested for a jewelry store break-in (using his stolen Social Security card), Stiles bailed him out personally under the alias "John Smith." Having already obtained a copy of Cordell's fabricated FBI record through his police informant, Stiles was convinced Cordell was a genuine criminal and invited him to join the organization.

Earlier, Cordell's Social Security card was stolen at the gym, which Stiles later used to frame him.

Alec Stiles' police informant was Police Commissioner Ralph Demory. Demory had been feeding Stiles information about FBI investigations, which allowed the gang to stay ahead of law enforcement. It was Demory who warned Stiles about the planned ambush at the mansion robbery, causing Stiles to call off the job. Demory also helped Stiles access Cordell's false FBI background through police channels, nearly compromising the undercover operation.

Alec Stiles cancelled the mansion robbery because he was tipped off by his police informant (Commissioner Demory) that the FBI and police were preparing an ambush based on intelligence from Cordell. Since Demory had access to police intelligence, he warned Stiles that the authorities knew about the planned heist, making it too dangerous to proceed. Stiles called off the job at the last minute, frustrating the FBI's attempt to catch the gang in the act.

Cordell had reported the plans to Briggs, who coordinated with local police for the ambush.

Cordell fired a shot from Stiles' stolen Luger pistol and retrieved the bullet for fingerprint analysis. He fired the gun in a way that would preserve the fingerprints on the bullet, then took it to be tested. However, Stiles discovered the gun had been fired and became suspicious. He learned from his informant (Demory) that his gang had been compromised, which heightened his suspicion that Cordell was an undercover agent.

Agent Cy Gordon was stabbed by one of Stiles' henchmen named Shivvy during the confrontation at the factory. Gordon had been following Shivvy, Matty, and Cordell to the hideout. After being stabbed, Gordon was critically injured but managed to send a message to Inspector Briggs with the gang's location before succumbing to his wounds. The film later clarifies that Gordon survived his injuries, though the situation appeared dire at first.

The FBI located the gang at the factory after Gordon was stabbed and managed to send a message to Briggs with their location. Gordon, despite being critically injured, used his remaining strength to alert Briggs about where the gang was hiding. This intelligence allowed Briggs to bring backup and intercept the gang, leading to the final confrontation where Cordell killed Stiles.

Alec Stiles became suspicious of Cordell after discovering that his Luger pistol had been fired. Stiles realized someone had handled the gun and fired it, which suggested evidence collection. Additionally, Stiles learned from his police informant (Commissioner Demory) that his gang had been compromised and that law enforcement knew about their operations. These two factors made Stiles suspect that Cordell might be the mole infiltrating his organization.

Stiles planned to have Cordell killed and then use Demory's officers to falsely implicate him in the crimes, making it appear that Cordell was a dirty agent who had been working with the gang. This would have eliminated Cordell while simultaneously discrediting him and covering the gang's tracks. However, the FBI intervened just in time, arriving with backup to prevent the frame-up and the planned execution.

Police Commissioner Ralph Demory was arrested by Inspector Briggs after Stiles was killed. Demory's role as Stiles' inside informant was revealed when the gang's operation collapsed. With Stiles dead and no longer protecting his criminal connections, Demory's corruption was exposed, and he faced justice for his involvement in the criminal scheme and the murders that had occurred.

Robert Danker was released on bail because the legal system granted him freedom while awaiting further proceedings, since the FBI laboratory tests had cleared him of any wrongdoing. However, this freedom proved fatal, as Stiles' gang used the opportunity to locate and eliminate him. The bail was granted under the alias "John Smith," which was actually arranged by Alec Stiles himself to ensure Danker could be tracked and killed.

Alec Stiles ran his criminal organization with a scientific, business-like approach rather than traditional gang methods. The film describes it as a "scientifically-run criminal organization," suggesting systematic planning, professional operations, and strategic thinking. Stiles used sophisticated tactics like recruiting through seemingly legitimate fronts (the gym), maintaining police corruption contacts, and planning heists with contingency plans. This methodical approach made him a particularly dangerous adversary for the FBI.