In terms of entertainment properties, single-player horror adventure game The Medium (I hesitate to use the term "psychological horror") is unfortunately competing in the search rankings with Medium, a mid-00's police procedural TV show where the "police" is actually a woman played by Patricia Arquette who talks to ghosts.
I would not bring this up, except the extremely breathy deadpanism of Arquette's very-sincere-while-saying-outlandish-things delivery did remind me of the performances in The Medium. And honestly, The Medium comes out on top here, both in terms of its performances and its story coherence and general originality. But it's also about exactly as horrific.