The movie that I immediately thought of while watching The Night House was 2000's What Lies Beneath, as both deal with possible ghosts, possible infidelity, and definite houses next to lakes. But The Night House is far stranger.
Rebecca Hall stars as a recent widow living in the lakeside house designed by her architect husband. A cryptic suicide note, and weird nocturnal visions, have her questioning whether her husband was crazy, she's crazy, or she's being haunted. The truth turns out be weirder than any of that.
Hall's performance definitely helps the film rise above some of its weaker story aspects, and it has some good, spooky moments. Not completely successful, but not a waste of time either.
I watched The Night House on HBO Max.