Free Contagion (Toxic City) by Tim Lebbon

water about them , Jack thought. But when he saw them appear along the riverbank at the metal railing, they paused and watched the boat chugging away downriver. He sensed a moment of indecision in them as they seemed ready to give pursuit. But then they leapt into the water and swam in the opposite direction, moving incredibly quickly across the water's slugging surface before diving and disappearing from view.
    “Trick?” Jenna asked. Jack wasn't sure. He readied himself, prepared to fight them if he had to. He imagined their slick fingers and tentacles curling around the boat's safety rail, their unnatural faces peering at him, showing him their teeth. But a few moments later hesaw them surface and scramble up onto the opposite bank, and they disappeared south of the river without another backward glance.
    “Weird,” Jenna said.
    “Yeah. Maybe there're easier pickings that way.”
    No one replied. None of them wanted to discuss what, or who, those easier pickings might be.
    The boat was a small tourist vessel that promised “The most picturesque views of London, bar none.” How one boat could offer any more picturesque views than any other, Jack did not know. But right then he thanked the owners of the City Sleeker for running their business on the Thames. He hoped they'd not been in London when Evolve hit, but disaster had struck at the height of summer, and he knew it unlikely. He didn't want to ask Breezer about where they'd found the Sleeker , nor how many bodies it had contained.
    It was about thirty feet long, the front half open, the stern covered with a glass canopy. The cabin was right at the stern, raised a little from the canopy so that the captain could see along the length of the boat. Seating was arranged looking outward, not ahead, with an open area of deck down the centre for those who wished to stand. Life belts were strung beneath seats, and on the covered area's roof was a lifeboat, strapped down and covered in a tarpaulin. No one wished to be reminded of their vulnerability.
    Jack and Sparky uncovered the lifeboat and familiarised themselves with its release mechanism. None of them wanted to go into these waters, and with the amount of detritus in the river, the chance of hitting a submerged object was too high for comfort.
    Breezer piloted them upstream. The others sat within the glass-enclosed area, still feeling exposed. The engine sounded incredibly loud.
    Lucy-Anne was not asleep, but she seemed to be staring into space. Jack held her leg and gently eased her bleeding. The bullet had barely grazed her, but she would still bruise. Then she went back to her silent contemplation. He guessed she had a lot to think through, and when they were safer he'd talk to her.
    Safer. It was not a word that meant much right then.
    Rhali watched the river banks, casting out her senses, discovering several groups of people moving around the city to the north. There were some to the south as well, and she quickly gathered a picture of movements which she communicated to the others.
    “I think some of them are Choppers,” she said. “And some of them are just…normal people. Like you.” She nodded at Breezer.
    “Irregulars,” Jenna said.
    “Whatever name they wish to use,” Rhali said dismissively. “But some of them—a lot of them—are strange. Changed. Like those women we saw. And they're tortured.”
    Jack glanced at Rhali.
    “Not like me,” she said. “I mean they're in pain from what they have become. Imagine changing so much. Imagine what such physical changes must feel like?”
    “They're going the wrong way to be fleeing the city, even if they know about the bomb,” Jack said. “They're coming south for something else.”
    “They do know,” Lucy-Anne said. “And Nomad told me they're not so monstrous. I think she meant that they know exactly what they're doing. They're intelligent.”
    “Great,” Jack said.
    “Yeah,” Sparky said. “Long as what they're doing doesn't involve