If you are using the clues to lay a trail for two or more children you will need to make sure that the first clue can only be solved by them together.
One way of doing this is to design the clue and then cut it into pieces so that no one piece alone will give away the location of the next clue and needs to be assembled with the others.
Another method might be to draw a map of the house showing where the next clue can be found and cutting it up into any number of shapes which need to be assembled like a jigsaw before the location becomes evident.
A third method would be to write parts of the clue on tracing paper so that only by holding them up together to the light can the message be read. A plain text message is quite sufficient for the purpose but you may choose to put the message in code to add to the difficulty.
TREASURE TRAIL NO 10
“I just don’t believe it”, said Appleton. Sir Cuthbert Appleton, one time Head of the British Secret Service, was seated round an open fire in the large sitting room of his club. The walls were hung with old masters and the windows with heavy damask. He was comfortably enveloped in one of those huge armchairs with wings.
“Why not.?”, said Bonham, Archivist of the Society of Antiquaries, tapping out his pipe on the hearth. Bonham was seated opposite in a matching chair. “It’s quite plausible.”
“If Marie Desnardnaud had the secret of Berenger Saulniere’s treasure then why would she want to leave clues that others might follow ?”, said Appleton.
“Because nobody lives forever. There was probably far too much for her to spend in her lifetime, even allowing for what Saulniere had already spent on building works. And someone else could benefit from it when she was dead.”
“Then why not just leave it to someone with plain instructions ?”, challenged Appleton.
“Well, to start with, Saulniere was a priest and so he had no children to leave it to – no legitimate children at any rate, and no illegitimate children that we know of. His only real confidante was his housekeeper, Marie Desnardnaud. She never married. She allegedly knew the source of all the wealth and kept the secret for thirty years after Saulniere’s death but unfortunately she died suddenly before she could pass on the secret.”
“How inconvenient”, said Appleton, dismissively.