Sounds like sleep paralysis. The pre-sleep auditory hallucinations happened to me a few times. The figures in black robes is also very common for sleep paralysis. Usually a result of stress, medication, messed up sleep schedule or some combination thereof.

https://en.m.wikipedia.org/wiki/Sleep_paralysis https://health.clevelandclinic.org/what-you-should-know-about-sleep-paralysis-and-sleep-demons/