One of the most eerie historical mysteries of all time is that of the strange disappearance of the three ligthouse keepers of Eilean Mor. Some even think they might have been abducted by a giant bird or squid... and, of course, by aliens. Others say they have gone mad and murdered each other. And then there is of course the theory of a very local tsunami on the west coast of Scotland...
The Flannan Islands had been marked by superstition from the time they were named for the obscure Saint Flan. It was said that the “Phantoms of the Seven Hunters” so resented the intrusion of the lighthouse that they lured the men over the cliff to their death...
As a matter of fact, Ducat did not want to be stationed at Eilean Mor. He seemed to have had some sort of a premonition and said it was "not the most suitable place for a man with a young family".
From the Upcoming ueue, submitted by Your Favorite Ghostwriter.
From Wikipedia:
Rogue waves are not tsunamis, which are set in motion by earthquakes [and] travel at high speed, building up as they approach the shore. Rogue waves seem to occur in deep water or where a number of physical factors such as strong winds and fast currents converge. This may have a focusing effect, which can cause a number of waves to join together.