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Once you have your kitbag together, there are a few other preparations to make before starting your investigation.

It is always necessary to rule out in advance the more worldly explanations for noises or movements which could in the excitement of the moment be attributed to a ghostly presence. I recall visiting one location where the chandelier was said to swing when ‘the spirits’ were around. An examination of the alcove in which the chandelier hung showed loose-fitting window panes which allowed quite a strong draught through. Needless to say, ‘the spirits’ only made their presence felt on breezy days!

Breezes are not the only thing to look out for. Loose floorboards are an extremely common source of ‘ghostly’ creaks and groans. Water pipes can create some unearthly noises in the wee small hours, especially in older properties. The noise created by a badly fitting door in a draughty old house can have the hairs on your neck standing on end. Even the scurrying of mice in an old house can be mistaken for something less worldly. The branch of a tree persistently tapping on a window or roof can cause the unprepared investigator to assume that they are not alone. The natural cooling down and settlement of a house at night can create a series of noises which sound very much like footsteps ascending and descending a staircase. If a fireplace has been used, the brickwork cooling can make slight creaking and cracking noises. All these eventualities have to be taken into consideration before an investigation can commence.

If you intend using a trigger object—a cross, coin, book, etc.—it should be placed on a sheet of white paper and a pencil outline drawn around its base before the investigation begins. It is preferable to train a video camera or cameras on the object to capture on film any movement that may occur. Make sure that the whole of the sheet of paper is clearly visible so that should any movement take place, it can be proved that nobody has interfered with the item. The room should then be sealed to prevent anybody entering and inadvertently (or purposely—it has been known!) moving the trigger object.

Also in advance of the investigation taking place, a thermometer should be used to determine the naturally occurring cold and warm areas of the location. Older houses commonly had ‘cold rooms’ where perishable foods would be stored. Also, it may be that a certain room is warmer than the rest of the house because of the hours that the sun shines there. All things have to be taken into consideration.

Lastly, make sure that you have a map of the location so that everybody involved has a clear understanding of how the rooms relate to one another. This will ensure that when people split off into groups to investigate different parts of the location, nobody will be confused as to where they are.