TIL: Apparently after you complete the 'A Tower Full of Mice' quest and have Kira's magic lamp 'Place of Haunting' POIs show up and you can visit random dead people! : r/witcher
Magic Lamp - The Official Witcher Wiki
Places of Power - The Witcher 3 Guide - IGN
Magic Lamp Walkthrough and Riddle Solution | The Witcher 3|Game8
The Witcher 3 Wild Hunt - Save Games at The Witcher 3 Nexus - Mods and community