Jason O'Mara

In Life on Mars (Thursday, Oct. 9, 10 pm/ET), ABC's remake of a BBC series, present-day NYPD officer Sam Tyler (Irish actor Jason O'Mara) gets hit by a car during a particular high-stakes case and wakes up in 1973. Just like that. His journey back to 2008 is hampered by a precinct full of rogue cops, including Harvey Keitel and The Sopranos' Michael Imperioli, and a capable though before-her-time policewoman Annie Norris (Gretchen Mol), who becomes Sam's closest ally. Plus, there's the tricky fact that nobody quite believes him. It's a nutty premise, but Hollywood has shown us that 1970s New York cop stories are rich with dramatic possibility. We talked to O'Mara and executive producer Josh Appelbaum — read on to see why they relocated the show from Manchester, England, how O'Mara mastered the local accent, and, well, what the heck this show is really about.