The results of the Seattle lab test had been shocking. The pH levels in several water samples taken near the mouth of the Douglas Channel were three hundred times lower than base levels taken elsewhere along the Inside Passage. Most disturbing was the final sample taken, just minutes before the Ventura nearly ran into the NUMA boat. The test results showed extreme acidity not far removed from the caustic levels of battery acid.

“ Thanks for sticking around,” Trevor said, as Summer cast off the lines and Dirk powered the boat into the passage. “This certainly appears to be just a local problem.”

“The waters know no international boundaries. If there is an environmental impact occurring, then we have a responsibility to investigate,” Dirk replied.

Summer looked into Trevor’s eyes and could see the concern ran much deeper. Left unspoken was the potential connection to the death of his brother.

“We met with the police inspector yesterday,” Summer said quietly. “He had nothing more to add about your brother’s death.”

“Yes,” Trevor replied, his voice turning cold. “He’s closed the case, reporting the deaths as accidental. Claims an accumulation of exhaust gases likely collected in the wheelhouse and killed everyone. Of course, there’s no evidence for that . . .” he said, his voice trailing off.

Summer thought of the strange cloud they had seen on the water, and the eerie Haisla tale of Devil’s Breath. “I don’t believe it either,” she said.

“I don’t know what the truth is. Maybe that will help tell us,” he said, staring at the water sample kit.

Dirk piloted the boat at top speed for over two hours until they reached the Hecate Strait. Tracking the navigation system, he cut the engine when they reached the GPS coordinates where the last water sample had been taken. Summer dropped a Niskin bottle over the side and scooped up a vial of seawater, then inserted a probe from the water analyzer.

“ The pH reading is about 6.4. Not nearly the extreme we found two days ago, but still well below normal seawater levels.”

“Low enough to create havoc with the phytoplankton, which will ultimately sound a death knell up the food chain,” Dirk noted.

Summer gazed at the serene beauty of Gil Island and the surrounding passage inlets, then shook her head. “Hard to figure what could be causing the high acidity levels in such a pristine area,” she said.

“Maybe a passing freighter with a leaky bilge or one that outright dumped some toxic waste,” Dirk posed.

Trevor shook his head. “It’s not very likely here. Commercial traffic generally runs on the other side of Gil Island. Typically, the only traffic through here is fishing boats and ferryboats. And of course the occasional Alaskan cruise ship.”

“ Then we’ve got to expand our sampling until we can pinpoint the source,” Summer said, labeling the specimen and preparing the Niskin bottle for another drop.