"You duck into a seer's tent not unlike many others you have seen throughout the wizarding world. All of them promise to let you talk with the deceased, and most of them surprisingly seem to work.There are also rumors that seers have the power to speak over distances other than just those of the afterlife."
Sybill Trelawny is the mystical professor of Divination in the Harry Potter series. Now she offers a service where you can speak to the dead. When one dies in the forest, through a fight or random event, they will end up in the Shades. They must stay in the Shades with a few exceptions, detailed in the Shades article (being worked on).