'Resurrection' Season 2 Spoilers: Unexpected Guests at Margaret Langston's Dinner Party

In "Resurrection" Season 2, the dead are still coming back to the world of the living as the "Returned," bringing all their old problems and secrets with them.
The first season of the show saw Jacob being discovered in China, after dying 32 years ago and then returning to his family's home. Since his "return," others in the town of Arcadia, Missouri, have come back from the dead, including those who had been cremated. Among the returned was Caleb who had been cremated but came back to start killing people.
In the premiere of the second season, we saw Jacob discovering his grandmother Margaret Langston next to her tomb. In addition we saw Agent Martin Bellamy, played by Omar Epps, who knew that he had already died and is now one of the returned. This could mean that Bellamy, who is supposedly the Thompsons' son, may have "returned" twice as he appeared to have first died when he was a baby and then was shot dead years later.
Meanwhile Margaret's return brings more conflict and drama as she does not get along well with her daughter-in-law Lucille, played by Francis Fisher. Lucille is now older than Margaret. She soon discovers that Jacob is closer to his grandmother, as both have returned from the dead.
Margaret Langston, played by 'Game of Thrones" star Michelle Fairley, is a welcome addition to the show.
In the next episode titled "Old Scars," we see her trying to host a dinner along with Lucille. However, a number of unexpected guests join the party and spoil the fun. Bellamy is also seen discovering that several of the returned are sick.
In the upcoming episode, Rachel, who is pregnant, will learn the alarming news that her baby is growing at double the rate of a normal fetus.
As for the mystery behind the returned, Entertainment Weekly has suggested that they might be aliens taking over the bodies and likeness of dead people.