Lionsgate Studios has unveiled theatrical trailer for A Simple Favor (2018). Centers around Stephanie (Anna Kendrick), a mommy vlogger who seeks to uncover the truth behind her best friend Emily's (Blake 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, murder and revenge. Watch theatrical trailer now!