Well the show started off good, then proceeded down hill from there. After reading this conclusion I'm glad the show didn't take up anymore of my time.
This is my opinion so don't curse me out if you don't agree.   See 5 other replies

An explanation of Doe's identity was eventually put forward by the show's producers in the pages of Entertainment Weekly. The article read, in part: Where We Left Off: Doe was helping the police solve crimes and being tracked by a seemingly nefarious group called the Phoenix Organization. He finally unmasked the big bad, a villain nicknamed Stocking Cap -- his friend, Digger (played by William Forsythe)! What Would Have Happened: Make that someone who looked like John's friend. The villain unmasked in the finale was actually just a Phoenix member with some fancy facial reconstruction. Turns out, the Phoenix believed Doe was the Messiah and its members were actually protecting Doe from a second group, which wanted him dead. The truth: Doe was injured in a boating accident. That mark on his chest? A scar left by a piece of shrapnel from the explosion. His Überbrain? A by-product of transcending his body during a near-death experience, traveling to a spiritual plane where all the universe's questions are answered. So Who is John Doe?! "You'd think we actually would have come up with his name," the show's producer revealed. "We have no idea," he finally admitted, before adding "Fred."[1] * On the popular weekly podcast Diggnation, Alex Albrecht said he was given a reason for the black and white vision, as well as all of the knowledge John Doe had. It was said that when you reach the gates of heaven, you are given the answer to every question you'll ever ask or that will ever be asked. And the reason for the black-and-white vision was an effect of being returned to earth.[verification needed]   See 5 other replies