Into the Forest (2015)

After a massive power outage, two sisters learn to survive on their own in their isolated woodland home.

Somber and intense doomsday drama eschews superficial effects and rather offers a good sense of solitude and abandonment and convincing performances by Page and Wood (although they're both well beyond the age of being the teenagers they are impersonating).

The Robber Bride (2007) (TV)

Journalist and seductress Zenia Arden has disappeared, and when her finger turns up on the shores of Lake Ontario -- next to her blood-soaked car -- the police believe they've uncovered a homicide.

Although the novel's original plot has been altered into an (intriguing) crime mystery with a twist ending, the ambiguities of the main character have been retained; the result is an intelligently made,  complex TV drama with a competent ensemble.