Miriam followed him out onto the high street's sidewalk. "Something's wrong, isn't it?"
"The shop's under surveillance." His expression was grim.
"I see." They walked past a post box.
"I'm going back there, by the back alley." He reached into an inner pocket and passed her a small envelope. "You might want to wait in the tearoom up New Bridge Way. If I don't reappear within half an hour-"
"I've got a better idea," she interrupted. "I'm going first. If there's someone inside-"
"It's too-"
"No, Erasmus, going in on your own is the dumbest thing you can do. Come on, let's go."
He paused by the entrance to an alleyway. "You don't want to make my life easy, woman."
"I don't want to see you get yourself arrested or mugged, no."
"Hah. Remember last time?"
"Come on." She entered the alley.
Piles of rubbish subsided against damp-rotted brickwork: galvanized steel trash cans composting week-dead bones and fireplace ashes. Miriam stifled a gag reflex as Burgeson fumbled with a rusting latchkey set in a wooden gate. The gate creaked open on an overgrown yard piled with coal and metalwork. Erasmus headed for a flight of cellar steps opening opposite. Miriam swallowed, and squeezed past him. "What exactly are we picking up?" she asked.
He glanced over his shoulder: "Clothing, cash, and an antiquarian book."
"Must be some book." He nodded jerkily. "Who was watching the shop?"
"Two coves. Ah, you mean why? I'm not sure. They didn't look like Polis to me, as I said. I think they may be your friends."
"In which case-" She briefly considered a direct approach, but rejected it as too risky: if they
"There'd better not be." They were at the foot of the steps now.
"I'm getting sick of this." She pushed the door open. "Follow me."
She duckwalked into a cellar, past a damp-stained mattress, then through a tangle of old and decrepit wooden furniture that blocked off the back wall. Erasmus followed her. There was a hole in the brickwork, and he bent down to retrieve a small electric lantern from the floor just inside it. As he stood up, he began to cough.
"You can't go in like that, they'll hear you." Miriam stared at him in the gloom. "Give me the lamp. I'll check out the shop." "But if you-"
She rested a hand lightly on his shoulder. "I'll be right back. Remember, I'm not the one with the cough."
Erasmus nodded. He handed over the lantern without a word. She took it carefully and shone it along the tunnel. She'd been this way before, six months ago.
The smuggler's corridor zigzagged underground, new brick and plasterwork on one side showing where neighboring tenement cellars had been encroached on to create the rat run. A sweet-sick stink of black water told its own story of burst sewerage pipes. Miriam paused at a T-junction, then tiptoed to her left, where the corridor narrowed before coming to an end behind a ceiling-high rack of pigeonholes full of dusty bundles of rags. She reached out and grabbed one side of the rack. It slid sideways silently, on well-greased metal runners. The cellar of Erasmus's store was dusty and hot, the air undisturbed for days. Flicking the lamp off, Miriam tiptoed towards the central passage that led to the stairs up to the shop. Something rustled in the darkness and she froze, heart in mouth: but it was only a rat, and after a minute's breathless wait she pressed on.
At the top of the stairs, she paused and listened.