Slinking along the dock, they made their way to a main gangplank affixed amidships. Their sodden dry suits squished as they walked, but they made no effort to conceal the noise. The whir and throb of the nearby pump station was louder than ever and easily drowned out the sound of their movements. It also obscured the sound of an outboard motor chugging toward the covered dock.

The security guard ran the small boat into the dock facility without lights. He loitered about the stern undetected for several minutes, then cruised down the outboard side of the tanker. Passing the prow of the ship, he started to circle back when he caught sight of the dive gear hanging on the wharf. He quickly killed the engine and drifted to the dock, tying the boat up and then examining the equipment.

Summer saw him first, noticing a movement out of the corner of her eye as she turned to ascend the gangplank. Dirk had already taken a few steps up the ramp.

“We have company,” she whispered, tilting her head in the guard’s direction.

Dirk glanced quickly at the guard, who had his back turned to them. “Let’s get aboard. We can lose him on the ship if he spots us.”

Ducking low, he raced up the gangway taking long strides. Summer matched his pace a few steps behind. They were clearly visible from the guard’s vantage, and they expected a shout from him to stop, but it never came. Instead, they zipped to the top of the ramp, escaping his scrutiny. But when Dirk was a step from the ship’s open side rail, a faint shadow appeared on deck, followed by a dark blur. Too late, Dirk realized, the blur was a swinging truncheon aimed for the side of his face. He tried to duck in midstep but was unable to dodge the blow. The wooden club caught him with a stinging blow across the crown of his skull. His dry suit hood softened what would have otherwise been a lethal blow. A kaleidoscope of stars crossed his eyes as his knees turned to jelly. Off balance when the blow struck, he reeled sideways, his hip crushing against the gangplank’s side rail. His momentum was all high, and his torso easily flipped over the side while his feet went skyward.

He caught a brief glimpse of Summer reaching for him, but her frantic hands slipped away. Her mouth opened in a brief scream, though he failed to hear her voice. In an instant, she was gone, as he tumbled into space.

The impact seemed to take forever in coming. When he finally collided with the water, it surprisingly induced no pain. There was just a cold smell of darkness before everything turned to black.

Chapter 20

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