Rent Grimm Tales (2013)

A young couple have been experimenting with a new drug called 'Black Forest', the sensation it induces is unique and potent, so Ashton heads out to score some more. Their supplier is Agnes, a seemingly harmless old lady who grows the weed out of a basement in her cottage. But Agnes has a dark secret, one she has kept hidden for many years. She is an evil and twisted Black Witch, desperate to regain her long lost beauty by any means possible. With her new drug she casts spells over hapless teenagers, so she can extract their souls to reverse the aging process. When Ashton doesn't return, his girlfriend sets off to the old lady's cottage, unaware of the despicable horrors that await them... .