Jail. Shot on location in cities across the U.S., Jail Season 4 follows prison inmates from their initial booking through their first moments behind bars in the eponymous 'Sin' city...  Las Vegas.  Each episode captures the harsh and sometimes humorous reality of what happens to criminals after they’re caught. In 2014, Spike revived the 4th Season of the series as Jail: Las Vegas.  The network ordered a 22-episode season which premiered on January 10, 2015.