Three votes from me, as usual.
Ghost of EH7 - A very striking image and treatment, very 'Americana', could be a album art for REM or something. For me, the ghostliness of this suggests a bygone age rather than anything demonic, which is an interesting take on it. My favourite of the month.
Keeps 21 - The most sinister entry of the lot, quite unsettling, really well lit and treated. If the above is album art for REM, then this is Nine Inch Nails.
ThankHeavenForShed7 - There were a few good ghostly double exposure efforts, but this was my favourite of them as I liked the narrative. The two lights in the tower look like eyes, and it gives the impression that the ghost and the tower are communicating in some way - maybe the tower is instructing the ghost to carry out yet more dastardly deeds.