“Good thing the condos Jack Schrager built on the banks of the river weren't occupied, or there would be a lot of dead people floating around in that harbor instead of scraps of wood. Damned lucky you saw those waves and recognized their threat.”

“More than lucky.” Jenkins clicked his computer mouse and pulled up a map of the world with arrows pointing to various countries. “In the decade starting in 1990, tsunamis killed more than four hundred people and caused billions of dollars in damage.” He tapped the screen. “This one in Papua New Guinea was a real horror. The wave was forty- five feet tall when it hit along nineteen miles of coast. A few minutes later, there were more than two hundred people dead.”

He switched over to a simulation. “This is an animation of a quake-generated wave attacking a Japanese village back in 1923. You see a lot of big waves in the Pacific. It's surrounded by the 'rim of fire,' all those tectonic plates that shift every so often.”

“Hate to be so parochial, but we're talking the Atlantic, not the Pacific, and the coast of Maine, not Japan. I've lived here all my life and I've yet to hear about a quake.”

“You've probably had more minor tremors than you know of, but I agree, that's why I started thinking about other causes. Tsunamis caused by landslides are less common. Then you've got volcanic eruptions and large meteorites.”

“Not too many volcanoes around here that I know of.” “Be grateful. The Krakatoa volcano created waves one hundred feet high and killed thousands back in 1883. If an asteroid five miles across landed in the mid-Atlantic, it would create a wave high enough to swamp the upper east coast of the U.S. New York would be wiped off the map.”

“That leaves landslide.”

“It's what we call a slump. Here - let me show you.” Jenkins pulled up another map on the monitor. “This is Izmit Bay in Turkey. They had a slump-generated wave there that caused extensive damage.”

“What caused the slump?”

“An earthquake.” Jenkins chuckled. “I know, it's like asking which came first, the chicken or the egg? In general, a slump is caused by a quake. That's the problem with our Rocky Point ripple. There was a slump, but no quake.”

“Are you sure?”

“Absolutely. I've talked to the folks at the Weston Observatory in Massachusetts. They keep tabs on all seismic disturbances in the area. They picked up some rumbles that indicated a slump, but no quake preceding it, as I'd expect. I heard a tremendous underwater boom shortly before I saw things happening. There was apparently a movement of ocean bottom east of Maine, but without the normal crash of tectonic plates. I've talked to tsunami experts all around the country. Nobody has heard of such a thing.”

“Then we're stumped.”