“Give up, Chūgo,” he urged between gasps. “Even if you kill me, you won’t get away. Especially if you harm the chamberlain. The army will hunt you down. And without a hostage, they’ll have no reason to spare your life.”

Chūgo dealt a low cut that sliced Sano’s calf. Sano’s instinctive jump saved his leg from mortal damage, but his despair increased because he’d easily recognized Chūgo’s maneuver as one he’d faced during practice sessions, yet had been too weak to react soon enough. He had only his wits to use against the madman’s superior strength.

Chūgo’s assault propelled him around the port deck and into the bow. Still parrying frantically, Sano circled the foredeck, noting how, as the boat tipped, the sail swung back and forth in an arc. With a sideways leap that strained his bursting lungs, Sano forced Chūgo to pivot and fight with his back to the sail. Sano lashed out at Chūgo and took a cut to his shoulder. Dodging, he tripped over the anchor. Then the wind whipped the sail around. The boom whacked Chūgo across the back; he stumbled. Sano sliced at Chūgo’s sword hand. The tilting boat knocked him off balance again, and the blade only grazed Chūgo’s knuckles, but the captain dropped his sword. Sano lunged at Chūgo. Then the boat lurched, throwing him backward.

Sano’s feet skidded on the flooded deck. His arms instinctively shot out. As he hit the cabin, Chūgo was upon him, one hand gripping his throat, the other clamped around his wrist, immobilizing his sword. The boat rocked again. Together he and Chūgo pitched forward. Now Chūgo, in a deft maneuver, reversed their positions. Sano reeled backward, past the swinging sail, and into the bow. His back struck the railing as he grappled with Chūgo. The guard captain increased the pressure on his throat, bending his head back.

Sano coughed, struggling with his left hand to break Chūgo’s hold, and with his right to free his sword. Back, back, he arched over the railing. Faintly, he heard Yanagisawa’s screams. Rain filled his gaping mouth, splattered his eyes. Above him he saw the stormy sky, then a soaring arch of crossed and parallel wooden beams. They were passing beneath the Ryōgoku Bridge. Sano couldn’t resist Chūgo any longer. His feet left the deck-

With a sudden, shuddering crash from the port side that Sano initially took for thunder, the boat stopped. He barely had time to register that it had struck one of the bridge’s supports. Their forward momentum carried him and Chūgo over the railing. They were falling…

The resultant splash jarred Sano’s bones. He gasped and gurgled when the cold water closed over his head. Kicking and thrashing, he tried to raise himself above the surface, but Chūgo kept hold of his wrist, twisting it. Pain shot through his arm; he let go the sword. Then Chūgo clasped both hands around his throat, throttling him, holding his head underwater.

The blood thundered in Sano’s head while he tried to tear Chūgo’s hands away. Seemingly made of steel, they didn’t budge. Sano retched and wheezed. Through the water that swirled across his vision, he saw Chūgo’s face: fierce, teeth bared, maniacal. The bridge seemed to sway above him, while the boat tossed beside it. Desperately Sano scissored his legs, pulling Chūgo down with him. At the same time, he grabbed for the short sword at his waist.

Obviously guessing his intention, the guard captain released Sano’s neck and intercepted his hand. Together they shot above the surface. Sano gulped a breath of air before a wave hit his face. He reached the sword, but Chūgo’s hand pinned his at his side. The captain’s muscular legs locked around Sano’s waist; his other hand pressed against Sano’s face, gradually pushing him back underwater. Sano’s strength was fading and his struggles weakened. Then despair brought inspiration. Behind Chūgo, the boat’s rocking, curved bow rose. Sano thought of the obsession that had compelled Chūgo to commit four murders and embark on this perilous journey.

“Chūgo,” he choked out, timing his words with the boat’s movements, “General Fujiwara and Lord Oda Nobunaga command you to let me go!”

The guard captain’s hold on him relaxed-just for an instant, but it was enough. With all his remaining strength, Sano threw his weight against Chūgo. Chūgo surged backward just as a wave lifted the boat. Then the boat dropped, smashing its hull against Chūgo’s crown. The captain’s face froze in an expression of puzzled surprise; his legs and hands fell away from Sano. Unconscious, he floated on his back amid rain and waves.

Sano wasted no time savoring his triumph. He had to get himself and his prisoner out of the river before they both drowned, free Yanagisawa, and tie the boat to the bridge, so a rescue party could reach them. Crooking his arm around Chūgo’s neck, Sano swam around to the stern and found the rope he’d climbed earlier. He tied it around Chūgo’s chest, then pulled himself up the rope and aboard the boat. Heaving and straining until his muscles almost tore and tears came to his eyes, he got Chūgo onto the deck…

… only to find that, while he was laboring, the boat had drifted out of reach of the bridge and down the river. Waves washed over the deck and dashed against the cabin. Sano used the rope to tie Chūgo’s hands and feet and lash him upright to a lantern pole. He slumped against the railing in despair as he scanned the deserted riverscape. Even if he anchored the boat, it might capsize before help arrived. Sano staggered around to the starboard deck, where Yanagisawa lay moaning and sobbing in a pool of water.

“Chamberlain Yanagisawa. Can you sail a boat?”

Yanagisawa abruptly quieted. Gulping in surprise, he raised his head. Rain, tears, and blood drenched his face. His mouth trembled; his swollen eyes were wells of stark fear.

“You,”he croaked. “Where’s Chūgo?”

Sano’s animosity toward the chamberlain dissolved into pity, leavened by a slight pang of satisfaction at seeing his enemy thus. “I’ve tied him up. He can’t hurt you. Chamberlain-”

Yanagisawa’s features contorted into the familiar mask of hatred. “I order you to untie me, Sano Ichirō,” he rasped. Safe from Chūgo, he’d recovered his authority. He wriggled toward Sano, spitting hoarse curses.

The boat was speeding down the river, smacking the waves. Lightning forks stabbed the sky. Sano repeated, “Can you sail this boat?”

“Of course not, you imbecile. I’m not a common sailor. Now free me, so I can kill you!”

Sano grabbed Yanagisawa by the armpits and dragged him into the cabin. Then, leaving the chamberlain tied, Sano hurried out to the stern. He’d never sailed a boat before, but he would have to try. Through the rain, he squinted in dismay at the bewildering web of ropes that ran from the sail, over the cabin, and through wooden fittings on the gunwales. What to do?

Sano seized the tiller and tried to turn the boat shoreward. Nothing happened. The oars, designed for a team of rowers, were too heavy and too far apart for one man to operate alone. Sano grabbed the sail’s lines and yanked, turning the flapping sheet at a diagonal. The headwind filled it, pushing the boat right-too hard. The boat heeled sharply. Sano’s heart seized as he first let out the sail, then heaved the other way and tried to brace his feet on the slippery, tilting deck.

“I’ll kill you!” Yanagisawa screamed from the cabin.

Just when Sano thought the boat would capsize, it bobbed upright. But his next attempt to change direction met with similar, near-disastrous results. He realized that he would have to correct the boat’s course gradually. He turned the sail again, this time at a slighter angle to the wind. The boat heeled, but held stable. As it raced downstream, it continued to turn. The bow aimed west and shoreward. Soon Sano saw looming toward him Edo ’s docks and warehouses. Now he heard other shouts besides Yanagisawa’s. He saw ahead the tiny figures of people waving from warehouse doors. One man separated himself from a group and ran out on the dock, jumping up and down. Recognizing Hirata, Sano laughed aloud in sheer, joyous relief. Now he was approaching his assistant on a diagonal. He waited until he neared the dock, then let loose the sail.