While the light lasts

The most important clue was Fenella's remark that the hiding place was near the place "where Derby was originally run... before it was changed to Epsom." This is a reference to the famous English horse race, which was first run at Derbyhaven in the southeast of the Isle of Man. The "quite near" island to which "a secret passage" was rumored to run from a farmhouse can easily be identified as St. Michael's Isle, on which, in addition to the twelfth-century chapel of St. Michael, is a circular stone tower known as the Derby Fort, from which the island gets its alternative name, Fort Island - "the two together is a likely conjunction which doesn't seem to occur anywhere else." The fort was represented on the map by a circle with six lines projected from it to represent the six historical cannons - "six of them" - in the fort; the chapel was represented by a cross.

The small pewter snuffbox was hidden on a rocky ledge running in a northeasterly direction from between the middle two cannons - "between these two have you got the compass?" - while Juan's initial suggestion that the clue "points to the northeast of the island" was a red herring.

The second snuffbox, apparently constructed from horn, was located on June 9 by Richard Highton, a Lancashire builder. As Fenella made clear to the murderous Dr. Fayll, Ewan Corjeag's dying words, "D'ye ken -" are a clue to the whereabouts of the treasure. In fact, they are the opening words of the traditional English song "John Peel," about a Cumbrian hunts-man, and when Juan suggested that "Bellman and True" was the "name of a firm that might help us," he was not referring to the "firm of lawyers in Douglas" mentioned at the beginning of the story but to two of John Peel's hounds, as named in the song. With these clues, the subject of the "torn snapshot," which was published as the third clue on June 9, would not have been "very hard to identify"; it was the ruins of the fourteenth-century Peel Castle on St. Patrick's Isle, and curved lines along the photograph's left-hand edge were the curlicues on the arm of a bench on Peel Hill, which looks down on the castle and under which the snuffbox was hidden. The charabanc journey to Snaefell, the highest peak on the Isle of Man, was another red herring.

The third "treasure" was found by Mr. Herbert Elliot, a Manx-born ship's engineer living in Liverpool M. Elliot later claimed that he had not read "Manx Gold" nor even studied the clues, but had simply decided on a likely area where, very early on the morning of July 8, he chanced upon the snuffbox, hidden in a gully.

The principal clue to its whereabouts was hidden in the fourth clue, published on June 14 (the vers beginning "In '85, this place made history"), in which the second word of each line spells out the following message:

"85... paces... east... north... east... of... sacred... circle... Spanish... head." The "Sacred circle" is the Meayll circle on Mull Hill, a roegalithic monument a little over a mile from the Spanish Head, the most southerly point of the island. The reference to an important event "in '85" and a Spanish chestnut, which from contemporary accounts proved a diversion for many searchers, were false leads. As for "Kirkhill Station," the clue uncovered by Juan, Fenella rightly said that there was no such place. However, there is a village called Kirkhill and there is also a railway station at Port Erin, where Juan and Fenella had had lunch before starting their search. If a line is drawn from Kirkhill to Port Erin and continued southward, it eventually crosses the Meayll circle, "the exact spot" identified by Juan.

Unfortunately, as was the case with the clues to the location of the third snuffbox, those for the fourth were never solved. The fifth and final clue, the verse beginning "Upon a rock, a sign you'll see," was published on June 21, but on July 10, at the end of the extended period allowed for the hunt, which had originally been intended to finish at the end of June, the final "treasure" was "lifted" by the Mayor of Douglas. Two days later, as a "sequel" to the story, the Daily Dispatch published a photograph of the event and Christie's explanation of the final clue:

That last clue still makes me smile when I remember the time we wasted looking for rocks with a sign on them. The real clue was so simple - the words "sixes and sevens" in the covering letter.

Take the sixth and seventh words of each line of the verse, and you get this: "You'll see. Point of (A). Near the lighthouse a wall." See the point of (A) we identified as the Point of Ayre. We spent some time finding the right wall, and the treasure itself was not there. Instead, there were four figures - 2, 5, 6, and 9 scrawled on a stone.

Apply them to the letters of the first line of the verse, and you get the word "park." There is only one real park in the Isle of Man, at Ramsey. We searched that park, and found at last what we sought.