Nearly 30 years after a prominent real estate developer was killed in a car bombing, the attorney for one of the people convicted in the murder is seeking a new trial.

Bob Eidman was concealing many secrets about his personal life and his business; ultimately, it was a stroke of bad luck that led to his demise.

A "20/20" airing January 24 at 9 p.m. ET on ABC looks at the murder of Gary Triano ... testing by Phillips defense team determined that DNA belonging to someone other than Ron Young was discovered ...