Why does the trailer give away the plot twist?

Apparently that’s the point, according to Song.

“The audience actually finds out the twist before my character does,” she told Refinery29. “I think the thrill of the movie is trying to help Jennifer catch up.”

Just as 2018’s You starring Penn Badgley and Ambyr Childers had viewers willing the hapless Beck to discover the truth about her boyfriend-come-stalker Joe Goldberg, it looks like Secret Obsession will have us all screaming at our screens.

Secret Obsession: everything we know so far about Netflix’s creepy new release