So You're Not an English Teacher

M1, T1: Out of prison early for good behavior, Letty Raines (Michelle Dockery) is trying hard to be a better person. But after she overhears a hitman (Juan Diego Botto) being hired to kill a man's wife, Letty sets out to derail the job and finds herself on a collision course with the killer, entangling herself in a dangerous and seductive relationship.