The story that taught a generation of women about incest (back when it was still taboo, before Lady Mary and Matthew Crawley made it acceptable) has been turned into a Lifetime movie staring Heather Graham, Ellen Burstyn and Kiernan Shipka as the girl who fucks her brother.

While the film won't air until January 2014, the trailer is available just in time for the holidays, so you can feel all weird around your relatives.

Flowers in the Attic Trailer: We Are Family [NY Mag]