‘Best to be honest, if you want to live,’ Cato said softly, pricking the man’s skin slightly.
‘Just one m-man, sir.’
‘Reckon that’s Cestius,’ said Macro at Cato’s side. ‘What did he look like? Big bloke? Small?’
The watchman looked Cato up and down. ‘About your size, sir.’
‘Not Cestius then.’ Cato eased his sword off the man’s neck. ‘How long ago?’
‘No more than an hour, I’d say.’
‘And no one else?’
‘Yes, sir. I’m sure of it.’
‘Right, then you’re coming with us. Macro, open the gate.’
Macro nodded and stepped over to the heavy iron bolt and eased it free of the receiver as quietly as he could. Thanks to the curfew there was no one on the wharf but Cato was wary of alerting anyone inside the warehouse to their presence. Macro eased the gate open just wide enough to admit himself and the rest of the men in single file. Cato allowed Septimus, the centurion and five of his Germans to pass through before he nudged the watchman towards the gap.
‘Don’t make a noise or try to get away from me, understand?’
The man nodded vigorously and Cato steered him inside. The warehouse yard looked just as deserted as it had a few days earlier. A crescent moon provided some dim illumination and by its light the centurion and his men quickly searched each of the storerooms. They were as deserted as before. There was no sign of any life.
‘Look for a hatch or some kind of drain cover,’ Cato ordered. ‘It has to be here somewhere.’
The centurion and his men searched again before the officer reported back to Cato. ‘Nothing.’
‘Damn.’ Cato released his grip on the watchman. ‘Have one of your Germans keep an eye on him. He’s not to utter a sound. If he tries to raise the alarm, or makes a run for it, tell your man to cut his throat.’
The centurion nodded and called one of the bodyguards over to issue his orders in a mixture of broken Latin and their own harsh guttural tongue. Cato turned to Macro and Septimus.
‘There has to be some kind of access to the sewer system here. We have to look until we find it.’
‘Or we don’t,’ said Macro. ‘Or we run out of time. Face it, Cato, this is a long shot.’
‘No it isn’t,’ Cato replied determinedly. ‘It has to be here. Keep searching.’
He strode away from the others and began a circuit of the yard, examining the ground under the carts carefully. Septimus came up to him and spoke in a hushed tone. ‘What if there’s a false wall?’
‘What do you mean?’
‘Supposing Cestius and his men knocked through a wall into a neighbouring warehouse, and then made up a false wall to disguise the gap?’
‘No, that wouldn’t work. If they did that they’d have had to have hired another warehouse and we’d know about it. Besides, that wouldn’t explain the stink of Cestius and his men.’
‘You’re assuming that it was to do with the sewer. There could be other explanations.’
Cato stopped to look at Narcissus’s agent. ‘Such as?’
Septimus tried to think for a moment and then shrugged.
Cato nodded. ‘Quite. Now, if you’ve finished, let’s continue the search.’
Septimus went off in the opposite direction and Cato continued to work his way round the yard. There was no sign of any disguised hole on the front wall and he was starting to edge his way along the inside wall when the pile of sacking in the far corner caught his eye. A faint ray of hope glimmered in Cato’s heart and he made his way over to it. He knelt down and began to pull the sacks aside. Macro joined him.
‘Having fun?’
‘Just give me a hand.’
They worked methodically, clearing them away, and then, just before they reached the angle in the wall, Macro paused, looked down, and hurriedly pulled away several more sacks. ‘Over here. I’ve found it.’
Cato dropped the sack in his hand and went to crouch by his friend. There amid the cobbles at Macro’s feet was a small wooden handle. Macro tried to clear some more of the sacking away but it would not move. Grumbling, he grasped a loose corner and pulled hard. There was a tearing sound, a length of the coarse material ripped free and Macro stumbled back with a curse.
Cato knelt down for a closer look. ‘Clever. They’ve stuck the sacking down on to the hatch to help conceal it.’
He grasped the handle and gave it an experimental pull. The hatch was heavy and Cato applied his other hand. An area four feet square began to rise. Cato turned to Macro. ‘Help me.’
With Macro helping at the corner, they raised the hatch and eased it back against the rear wall of the courtyard. A wide ladder fixed to one side led down into pitch blackness. There was no sign of movement, but there was a faint sound of trickling water, and a waft of foul air.
Cato turned and called as loudly as he dared, ‘Septimus, over here. Plautus, bring your men.’
The others padded over and stood looking down at the opening. Cato gave the order for the torches to be lit. Plautus took out the tinder box from his side bag and began to strike sparks on to the thin sheets of charred linen. As soon as the first glimmer of a flame appeared he fed it with some dried moss until the flame was large enough to use. He gestured to one of the men carrying the bundled torches. ‘Let me have one.’
He carefully dipped the tallow-impregnated cloth on the end of the wooden shaft towards the flame and held it there until the torch produced bright yellow tongues of light. Plautus rose to his feet.
‘Let’s light the rest of them.’
One by one the torches flared into life and Cato took one. He ordered Plautus to leave the warehouse guard gagged and bound and then cautiously lowered himself on to the top rung of the ladder. He descended a few more rungs and by the light of the flame he could see that Cestius and his men had shored up the sides of the shaft with stout timbers. Ten feet down, the shaft opened up and Cato held the torch out to examine his surroundings. Old brickwork curved away on both sides and below there was a dull gleam of moving water. The ladder descended another six feet and then he reached the bottom. He was standing on a narrow paved walkway to one side of a small tunnel. It was just possible to stand erect under the curved ceiling. At his side a glistening flow headed steadily towards the Great Sewer. The air was thick with the stench of human waste and Cato wrinkled his nose in disgust.
‘What can you see?’ Macro called down.
‘There’s a tunnel. Leads towards the sewer in one direction. The other seems to head towards the Aventine district. Bring the rest of the men down. I think we’ve found what we’re looking for.’
As the other men descended the ladder, Cato made his way a short distance upstream, examining the walls and the walkway. Most of the brickwork was covered in a layer of slime, but there were extensive patches that had been scraped away, and the same was true of the walkway which looked as if it had been heavily used recently enough for the stone to be dry to the touch, with scant evidence of new growth. Behind him the sounds of the Germans muttering in disgusted tones filled the tunnel.
‘Nice spot you’ve discovered here,’ Macro grumbled as he and Septimus joined Cato. ‘Very fragrant.’
Cato ignored the comment and stared along the tunnel. There was no movement within the loom cast by his torch, aside from the flow of sewage and the scampering of a pair of rats as they scuttled away from the men who had invaded their realm. There was a splash and a scrabbling sound from the dark as they ran off.
‘Do you think any of them are still here?’ Septimus asked nervously as he stared into the gloom.
‘One at least.’ Cato stood up. He turned back to Centurion Plautus. ‘Tell your men that we go on from here in silence. Not a sound, understand?’
‘Yes, sir.’
Cato could not help a slight smile at being addressed as a superior. Narcissus had told the centurion to obey him and Macro when he had briefly introduced the two Praetorians, dressed in plain white tunics and carrying no sign of their rank. Now it seemed that Plautus recognised and accepted Cato’s authority without having to be told anything of his real identity and rank. He glanced back and saw that all the men were ready to follow him. The flickering glow of the torches illuminated the damp walls of the tunnels and the flow of sewage gleamed as turds and rubbish drifted by. Cato held his torch forward at an angle and then gestured with his spare hand. ‘Let’s go,’ he called softly.