He first worked with the Wayne County Sheriff’s Department before joining the DPD but moved because, I just really wanted to do police work and this city is the best way to do that. While the series often follows the investigations to their end, it usually focuses on their first 48 hours, hence the title. Get exclusive videos, pictures, bios and check out more of your favorite moments from seasons past. The First 48 is an American documentary television series on A&E.Filmed in various cities in the United States, the series offers an insider's look at the real-life world of homicide investigators. Catch up on season 1 of The First 48, only on A&E'. When Alanis' first big break, surveillance video of the potential perpetrator, fails to show the suspect's face, investigators take a closer at the footage and notice something big-- a small detail in the video could be a huge break for the case; Detective Marcel Walker responds to the city's first murder since a deadly tornado ravaged the city. PO Scott Shea was born in Troy, NY but raised in a town just outside of Detroit. The First 48 takes viewers behind the scenes of real-life investigations as it follows homicide detectives in the critical first 48 hours of murder investigations, giving viewers unprecedented access to crime scenes, interrogations and forensic processing.