"Darlin'" is actually the third movie in a trilogy that started with "Offsping" (2009) and was followed by "The Woman" (2011). Based on a novel by Jack Ketchum.
The first two movies were interesting, scary and disturbing. "Darlin'" is none of those and disappointing at best. The cast is not bad but the script is lazy written and plays it 'safe' most of the time and we've seen it all before.. way better.
You don not care for the characters and the story gets boring within half an hour (it actually runs for 100 minutes which is 20 minutes too long) The gore is mediocre and not convincing including a dangling rubber knife sticking out of a helpless victim.
This time directed by Pollyanna McIntosh (who played the woman in all three movies) and she even brought her friend Cooper Andrews of "The Walking Dead" fame. She really should stick to acting because I doubt this will become a quadrilogy after this weak effort.