Amanda Warren, Frank Harts, Justin Theroux Amanda Warren, Frank Harts, Justin Theroux

"She's not coming back... none of them are," a character from The Leftovers says in the second trailer for Damon Lindelof and Tom Perrotta's upcoming HBO drama.

The network released the 90-second spot on Saturday night, and we're still furiously scratching our heads (in a good way) trying to figure out what's going on in the enigmatic new series.

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Here's what we do know: The Leftovers is based on Perrotta book of the same name and follows a mysterious event that whisked away two percent of the world's population without warning. Some call it the Rapture, but is it something else?

The Leftovers is executive produced by Perrotta and Lindelof, who will also run the show, and stars Justin TherouxAmy BrennemanLiv TylerChristopher Eccleston and Chris Zylka.

What do you think is happening in The Leftovers? You can get the answers (and probably many more questions) when the series debuts Sunday, June 29 at 10/9c on HBO.