Starting watching this having been recommended it via my Netflix subscription. Have now watched 3 series and I must say it's enthralling The premise is that 4,400 people have been abducted over the last 90 years and then all of a sudden they are returned....and some have special abilities. I wont give too much more away as you need to watch it to enjoy the twists and turns that this takes you down. I like the fact that it doesn't feel like its a worn out concept, even during series 3 - it definitely has longevity I'd definitely recommend people get into it.