Meet Blake Lively's mysterious character Emily in the teaser for her new flick

Cape Town – Blake Lively caused quite a stir when she deleted all the pictures on her Instagram account and asked the ominous question, 'What happened to Emily?' (Read more here)

And now we finally know who Emily is after the Gossip Girl actress posted a teaser for her upcoming film, A Simple Favour.

We'll have to wait and find out what happened to her though, when the movie releases in cinemas later this year. 

Based on the novel by Darcey Bell it centres around mommy blogger Stephanie (Anna Kendrick) who seeks to uncover the truth behind her best friend Emily's (Lively) sudden disappearance from their small town. 

Stephanie is joined by Emily's husband Sean (Henry Golding) in this thriller filled with twists and betrayals, secrets and revelations, love and loyalty and murder and revenge.

WATCH THE MYSTERIOUS TEASER HERE:

The film releases in SA cinemas on Friday, 21 September.