'Days of Our Lives' Nov. 28 to Dec. 2 spoilers: JJ finds out about Abby, agrees to keep the truth

One of the main stories to watch out for on "Days of Our Lives" this week is when JJ Deveraux (Casey Moss) finds out that her sister, Abby (Marci Miller), faked her death and subsequently agrees to keep it a secret.

"Days of Our Lives" is one of the longest running soap operas in the world and has been on air almost every weekday since 1965 on NBC. The plot focuses on the core families, Hortons and Bradys, but after years of airing the show started to feature several other families that became just as important to the plot as well.

This week, JJ will find out about her sister faking her death. It can be recalled that Abby faked her death in a supposed plane crash with the help of Andre DiMera (Thaao Penghlis).

The official synopsis of today's episode via TV Guide reads: "Chad celebrates Thanksgiving and Thomas' birthday with the Horton family; JJ makes a stunning discovery in the attic."

The synopsis is speculated to mean that the "stunning discovery" at the attic is actually JJ finding out that Abby is well and alive. However, Abby will ask her brother to keep her existence under wraps to which her brother will reluctantly oblige.

However, it will not be easy for JJ especially when he sees Gabi Hernandez (Camila Banus) getting too close with Abby's husband and Gabi's long-time love interest, Chad DiMera (Billy Flynn). JJ knows that Chad would not be an inch closer to Gabi had he known his wife is alive.

More people will try to talk Abby into revealing herself to Chad as the synopsis hints that on Tuesday, Nov. 29, "Gabi and Chad share a close moment, which Jennifer (Horton [Melissa Reeves]) witnesses."

Jennifer, who also knows about Abby's existence, will try to convince the latter to let Chad know that she's alive. This scene is expected to be seen by viewers on Friday, Dec. 2, and whether or not Abby will finally decide to reveal herself to Chad.

"Days of Our Lives" airs from Monday to Friday, at 1 p.m. EST on NBC.