Keeping it in the Family
Gay Lawrence (George Sanders) arrives at the docks to meet his brother who is coming in by boat but when he gets there with his driver Lefty (Don Barclay) police are sealing of the place as there has been a death and it is supposedly Gay's brother Tom (Tom Conway) who has taken his own life. Playing along with it Gay starts investigating the case knowing full well that it wasn't his brother covered by the sheet in a cabin and when Gay becomes injured it is Tom who takes over as The Falcon to investigate what happened and the connection to three Nazi spies.
Taken on face value "The Falcon's Brother" isn't anything special as we have Gay just happening to be in the wrong place at the wrong time again. Except here we have his brother Tom becoming involved in the family business of crime busting. As such we have danger, mystery, the police and various attractive women for the debonair brothers to flirt with but as I said on face value it is mostly typical of "The Falcon" series.
But in truth "The Falcon's Brother" is more entertaining for what went on behind the scenes as George Sanders had tired of playing Gay Lawrence and wanted out so originally they were going to make this the fourth and last movie in the franchise. But then they brought in the character of Tom, Gay's brother and this allowed for the series to continue for many more episodes. But in a promotional master stroke they got George Sanders' older brother Tom Conway to play his on screen brother and despite being older Tom brings more energy to the movie which had been lacking from Sanders' performance.
What this all boils down to is that "The Falcon's Brother" is an okay episode in the Falcon series and is more entertaining because Tom Conway brings a fresh pair of legs to things. But it is all the bits from behind the scenes which makes this both more interesting and entertaining.