Philip was seized by soldiers on the beach and pulled back, his mouth open in a cry of anguish. Salvius and Achillas drew swords and clambered back into the boat. On either side, Pompey's two bodyguards were held under the water until their flailing subsided. Inside the boat, while Pompey's scribe cowered and ducked, the Great One collapsed as Achillas, Salvius, and Septimius swarmed over him, their swords flashing in the sun.

Abruptly, the stabbing stopped. While the other two pulled back, their chests heaving and their breastplates spattered with blood, Achillas squatted down in the boat and performed some operation. A few moments later he stood upright, his bloody sword in one hand and the severed head of Pompey held aloft in the other.

Those of us on the deck of Pompey's galley stood frozen and speechless. From the various ships around us, scattered shrieks and cries echoed across the still water, punctuating the unnatural silence. Achillas deliberately made a point of displaying the head of Pompey to the fleet offshore. The Great One's eyes were wide open. His mouth gaped. Gore dripped from his severed neck. Then Achillas turned about to show the head to the troops on shore. In their midst, in front of the royal pavilion, King Ptolemy had at last appeared. At some point during the attack, he had taken his place upon the throne, surrounded by a coterie of attendants. He was small in the distance, his features hard to make out, but he was instantly recognizable by the glittering uraeus crown of the Egyptian pharaohs upon his head, a jewel-encrusted band of gold with a rearing cobra at the center. In his crossed arms the king clutched a flail and a staff with a crook at the end, both made of bands of gold interspersed with bands of lapis lazuli. An adviser spoke in his ear, and the king responded by raising his staff in a salute to Achillas. The assembled Egyptian troops broke into a stunning cheer that swept across the water like a thunderclap.

I turned and looked up at Cornelia. She was as white as ivory, her face contorted like a tragedy mask. The galley's captain ran to her, whispered in her ear, and pointed toward the west. Looking dazed, she turned her head. From the direction of the Nile, a fleet of ships had appeared on the horizon. "Egyptian warships!" I heard the captain say, raising his voice and gripping Cornelia's arm to rouse her from her trance.

She stared at the ships, then at the shore, then again at the approaching fleet. The muscles of her face twitched as if she was trying to speak but could not. She shivered, blinked, and finally cried out, "Weigh anchor! Set sail! Set sail!"

Her cry broke the spell that held us frozen. The deck erupted in frenzied movement. Soldiers and sailors rushed this way and that. I was shoved and spun about and almost knocked down.

Amid the chaos I climbed to a higher spot and scanned the nearby ships. All the boats were weighing anchor at once, with oarsmen struggling to turn them about and sailors frantically setting sail. Finally I spotted the Andromeda. Bethesda stood at the rail, staring toward Pompey's galley but clearly not seeing me amid the confusion on the deck; she was standing on tiptoes and waving her hands. Even as I watched, Rupa grabbed her from behind and pulled her away from the rail and back toward the cabin, trying to get her out of the way of the sailors running back and forth. I waved my arm and shouted her name, but to no effect; in the next instant she disappeared into the cabin with Rupa and the slave boys.

I jumped onto the deck and ran to the ramp from which Pompey had departed. Sailors were heaving on ropes to raise the ramp clear of the water. I ran to its edge and dove into the waves.

Salt stung my nostrils. My heart pounded in my chest. I broke the surface and drew a desperate breath. All the ships were in motion, confusing me and making me lose my sense of direction. It seemed that every captain was acting on his own, with no coordination among them; hardly more than a stone's throw from Pompey's galley, two smaller boats collided, knocking some of the sailors overboard. I treaded water, turning around and trying to orient myself, searching for the Andromeda. I thought I knew the direction where I had last seen her, but my view was blocked by a passing ship. Nonetheless, I set off swimming in that direction, away from the shore.

The motion of so many oars from so many ships created waves that rippled and merged and smacked against one another. Water surged into my nostrils. I swallowed air and breathed in water. Swimming became impossible; just to keep my head above water was a struggle. From nowhere, a galley appeared and went racing by me, the long bank of oars, one after another, crashing into the water beside my head, setting up a turbulence that tossed me this way and that and dragged me under, spinning me upside-down beneath the waves.

By the time I recovered, I was more disoriented than ever, not even sure in which direction the shore lay. It took all my energy just to stay afloat. At some point, I thought I caught a glimpse of the Andromeda and tried desperately to swim after it, expending the last measure of my strength to call out Bethesda's name. But it might very well have been some other boat, and in any case my pursuit was hopeless; the ship quickly receded, and with it my hopes of ever seeing Bethesda again.

At last I gave up; or more precisely, gave in. Neptune had his own plans for me, and I relinquished all control to the god. My limbs turned to lead, and I thought that I must surely sink, but the god's hand kept me afloat and upright, with the hot sun on my face. The oar-churned sea grew calmer. The multitude of sails receded into the distance. From somewhere I heard a great commotion of movement, as of an army de-camping, but even that noise gradually faded until I heard only the shallow sound of my own breath and the gentle lapping of waves upon a shore. A sandy bank materialized beneath my back; the waves no longer carried me aloft but merely nudged me this way and that. The shallow surf sighed and whispered around me. I let out a groan and closed my eyes.

I may have slept, but probably not for long. Above the sighing of the surf, I heard another sound: the buzzing of flies, a great many of them, somewhere nearby. I opened my eyes and saw a bearded face above me. His eyes were wet with tears. His lips trembled. "Help me," he said. "For the love of Jupiter, please help me!"

I recognized him: Philip, the trusted freedman who had accompanied Pompey ashore.

"Please," he said. "I can't do it myself. He's too heavy. I'm too weary. I saw you on the galley before we left. You were standing with Cornelia. Did you know him well? Did you fight beside him? I thought I knew all his friends, but…"

I tried to rise, but my limbs were still made of lead. Philip helped me roll to my side, onto all fours. I rose to my knees, feeling them sink into the wet sand. Philip's hand on my shoulder steadied me.

The beach was deserted. The pavilions were gone; the soldiers had all vanished. The quietness of the place was eerie; I heard only the gentle murmur of waves and the low droning of flies.

I turned my head and gazed at the sea. The same thin haze that blanched the sky obscured the distant horizon. In that uncertain expanse of flat water, there was not a sail to be seen. Earth and sea were both empty, but not so the sky; I looked up and saw carrion birds circling.

Philip slipped his hands under my armpits and lifted, eager to bring me to my feet. He was a small fellow, but obviously quite strong, certainly stronger than I was. He claimed to need my help, but from the look in his eyes, I knew it was my company he wanted, the presence of another living mortal in that place of desolation. Philip didn't want to be alone, and when he led me down the beach to the place where the royal skiff had landed, I saw why.