Life on Mars (U.S.) (2008) In present-day New York City, cop Sam Tyler (Jason O'Mara) is struck by a car and transported to 1973. But is Sam really lost in time, or is it an illusion resulting from his accident? As Sam tries to figure it all out, he attempts to continue his job with the N.Y.P.D. and discovers that police work has come a long way in 35 years. Michael Imperioli and Harvey Keitel co-star in this American version of the hit British show from David E. Kelley.