A long time ago I watched The 4400, a series with Jacqueline McKenzie. I have all four seasons on disc, but somehow never got around to watching the final fourth season. Let's start it now, I hope I remember enough of the previous seasons.
It's a somewhat scifi series, with 4400 people suddenly returning to earth after presumably having been abducted by aliens. Jacqueline is not one of those, but a police person investigating things around it. As strange things happen: they start to show special abilities, they form a cult like organisation, and what really happened to them while they were missing is still unknown.