Given the below context:  After losing her son Oliver in a car accident in India, Maria has not recovered from the tragedy. During the accident, Maria chose to save her youngest daughter, Lucy instead of Oliver and the guilt devastated her. One night, her husband Michael finds Maria unconscious after a suicide attempt. In the hospital, Maria is comforted by her housekeeper Piki. Piki asks Maria if she wants one final chance to say goodbye to Oliver. She explains that in her village, there is an abandoned temple where the line between the living and the dead is very thin. Maria must scatter her son's ashes at the temple steps and lock herself in. Oliver will speak to her once night falls. However, no matter what Oliver says, Maria must not open the temple door for him. Maria agrees and the pair have Oliver's body exhumed and burned. Maria notices some strange men covered in ash. Piki explains that they are shamans who consume the flesh of the dead and coat themselves in ash to strengthen their bonds between the worlds of the living and the dead.  Guess a valid title for it!
Answer:
The Other Side of the Door (2016 film)