Trailers you might have missed: 'The Host,' 'Olympus Has Fallen,' 'Trance,' more
Also: 'The Sapphires,' 'The Internship,' 'Stand Off'
Who: Andrew Niccol ("Gattaca") directs Saoirse Ronan, Max Irons and Jake Abel star in this supernatural romance based on the book by Stephenie Meyer ("Twilight")
When: Released March 29.
What we learned from the trailer: A YA spin on "Invasion of the Body Snatchers" that features more action than the "Twilight" films and gives Ronan a chance to break out her action movies previously seen in "Hanna."