John Doe: Pilot

A man awakens on an island only to discover that he has no memory of who he is. Without knowing his identity, he travels to Seattle and finds out that not only is he an amnesiac but that he is a savant, that he knows literally everything. The colorblind genius soon becomes a police consultant, aiding in the most inexplicable of crimes, while, at the same time, beginning a journey to find out who he is. (imdb)