A Simple Favor (2018)

"A Simple Favor" is a 2018 Thriller movie directed by Hannah Scott and starring by Anna Kendrick, Blake Lively. Stephanie, a dedicated mother and popular vlogger, befriends Emily, a mysterious upper-class woman whose son Nicky attends the same school as Miles, Stephanie's son. When Emily asks her to pick Nicky up from school and then disappears, Stephanie undertakes an investigation that will dive deep into Emily's cloudy past.