to date, the alvin davis murder remains unsolved. >> the real story is alvin davis and his family.have no closure. it's still an open case for them. it's still an open case for me. never lose sight of the job. i don't let it affect me or make me second-guess things now. >> today, riky jackson's life is slowly getting back to normal. he works as a hairdresser and lives near his parents in a quiet superb outside philadelphia. >> it's either going to tear you apart or bring you together. and if you're a strong family unit like we are, you know, like i said he only asked me once did i do it, and there was never a question. i said no. there was no conversation. it was on. and hasn't been a question since. >> the riky jackson case and others like it have caused legal experts like robert epstein to question just how reliable is fingerprint evidence. >> the riky jackson case was a case that really brought these problems to the light because we had a very, very clear case of misidentification where a poor fellow was incarcerated for two years on the basis of a misidentification for a horrib