Reese Witherspoon already has a movie role on lock down after she gives birth. This is some serious pre planning for the chick that hasn't even announced she's pregnant. Reese will play the mother of the real life murder victim in the film called Devils Knot. Colin Firth has also signed on. This is an unexpected move for notorious good girl actress Reese, not to mention that new moms usually start lighter more kid friendly roles, you know, steering clear of things like murder.