This guy doesn’t think so:
http://theamericanmercury.org/2012/10/who-really-solved-the-mary-phagan-murder-case/
Makes for a good read, and he makes a compelling case for Franks’ guilt based on, you know, evidence.
I may have to eat my words. Wikipedia cites sources who describe the new american mercury as an anti-Semitic site dedicated to smearing Leo Franks.
The sources are the Southern Poverty Law Center, and the Anti-defamation league and the Jewish Forward. The first source is untrustworthy, the latter two, not so much.