I was just looking at the old library copy of
THE GREAT SUPERMAN BOOK and reading an entry entitled ANNISTER (Mr.). The entry reads as follows:
Date: 13 Feb 2004
From: Anthony Durrant
To: Metropolis Mailbag
From the above summary, I could see that it is very similar to a Perry Mason episode from the 1950s, over ten years after the Superman story came out. In the Perry Mason version, the boy is the son of the victim whom Perry's client is on trial for killing, the murderer dies before the client is set free, and the Barnett character never learns that the boy is not his grandson. I wonder, though - could the Perry Mason story still have been plagiarized from the original Superman version?
ANNISTER (MR.). The unscrupulous attorney for elderly blind millionaire John Barnett, and the leader of a gang of criminals who, unbeknownst to Barnett, have been using his estate as the headquarters for a hijacking racket involving the theft of gun shipments en route from arms factories. By November 1943 Annister and his henchmen have concocted an elaborate scheme to bilk Barnett out of the $1,000,000 reward he has been offering for the return of a long-lost grandson - and ultimately, through inheritance, to seize control of Barnett's entire estate - by passing off an orphaned youngster, unrelated to Barnett, as Barnett's missing grandson. SUPERMAN thwarts the scheme and apprehends the criminals, although the warm-hearted Barnett decides unltimately to adopt the bogus grandson anyway (Act No. 66: "The Boy Who Came Back!").