10 Canceled TV Shows That Came Back

"Southland" made the jump from network television to cable after its first season. NBC/Getty Images

Officer training, alcohol and drug abuse, homosexuality, death on the job: During its tenure, "Southland" delved into authentic issues facing police officers. In April 2009, NBC launched the series. The show was popular with critics but not with viewers, and the network decided that the second season's episodes were too realistic and depressing for a 9 p.m. broadcast time slot, and chose not to air them.

TNT, however, thought "Southland" was a good fit, so the cable network picked up the show. It aired the first two NBC seasons, and their success with viewers prompted production of three more. The last episode of season five ended in a cliffhanger, with the fate of one major character left unknown. When the series was not renewed, viewers were left wondering, and the character lies forever in the zone between dead and not dead.