Dark Orchid uttered a piercing scream of stark terror.
In front of the mirror stood the severed head of her elder sister.
Mrs. Lee quickly stepped down in the bathroom testing the edge of the knife on her thumb.
'You don't like me, foolish girl!', she hissed. 'Therefore I shall kill you just as I killed your sister!'

DARK ORCHID SURPRISED WHILE TAKING A BATH
Dark Orchid turned round, screaming for help at the top of her voice. She had a vague idea to smash the lattice window and escape to the garden.
She shrank back as she saw a huge shadow darken the window.
The window was jerked from its frame and a colossal man jumped inside.
He gave the two women a quick look, then sprang over to where Mrs. Lee was standing. He dodged the knife thrust, caught her wrist and twisted it round. The knife clattered to the floor.
In the twinkling of an eye he had bound Mrs. Lee's hands behind her back with her own sash.
'Ma Joong!', cried Dark Orchid, 'she killed my sister!'
'Cover yourself up, impudent girl!', he said gruffly. 'I already know that this woman killed your sister!'
Dark Orchid felt a glowing blush rise to her face. While Ma Joong dragged Mrs. Lee to the bedroom, Dark Orchid hurriedly put on her clothes.
When she entered the bedroom Ma Joong had laid Mrs. Lee on the couch securely bound hand and foot. As he replaced White Orchid's severed head in the basket he said:
'Run and open the gate! The constables will be here soon, I came ahead on horseback.'
'I don't take orders from you, you bully!', Dark Orchid snapped.
Ma Joong laughed loudly. She hurriedly left the room.
When dusk had fallen Judge Dee and his lieutenants gathered in his private office.
Woo came in and greeted the judge.
'The body of White Orchid has been deposited in the quarters of the guards', he said hoarsely. 'Her head has been added to it. I have already ordered a coffin of solid wood.'
'How is the headman?', the judge inquired.
'Now that he knows what happened to White Orchid', Woo replied, 'he has calmed down, Your Honour. Dark Orchid is with him.'
Woo bowed and went out again.
'That young man has sobered down considerably!', Judge Dee remarked.
'I can't understand what that fellow is hanging around here for!', Ma Joong said peevishly.
'I understand that he feels in some way responsible for White Orchid's tragic fate', Judge Dee observed. 'That poor girl must have lived through hell while she was in Mrs. Lee's clutches. You saw the marks on her body.'
'I still cannot understand', sergeant Hoong said, 'how Your Honour discovered out there in the maze that there existed a connection between White Orchid and Mrs. Lee.'
Judge Dee leaned back in his armchair. Slowly stroking his beard he said:
'The choice was not very great. The old Governor kept the secret of the short cut strictly to himself. Even his son Yoo Kee or his young wife had never been inside. Only a person with exceptional opportunities could have discovered it.
We knew that Mrs. Lee often drank tea in the garden pavilion with the Governor and Mrs. Yoo, discussing his paintings. I take it that Mrs. Lee once surprised the Governor when he was working on his landscape. Mrs. Lee has the trained eye of a painter, it would not be difficult for her to recognize that this was no ordinary landscape. Since she was familiar also with the situation at the entrance of the maze, she must have guessed its meaning without the Governor being aware of it.'
'Probably she saw the picture at an early stage', Tao Gan observed, 'when only the pine trees had been marked in. The Governor would have painted in the rest later.'
Judge Dee nodded.
'Since Mrs. Lee has this abnormal interest in young girls', he continued, 'she kept this knowledge to herself. She thought that it might come in useful in a time of crisis!
Somehow or other she lured White Orchid to her house. Fang's eldest daughter was a girl of a soft, pliable character, Mrs. Lee must have found it easy to subdue her. She kept her a captive in her house for a few weeks. The girl's visit to the deserted temple must have made Mrs. Lee uneasy. She must have taken White Orchid to the country mansion and locked her up in that room with the grated window. Thus when the constables searched the eastern quarter and inspected Mrs. Lee's house they did not find her. That visit, however, must have frightened Mrs. Lee. She decided to kill her captive. The hidden pavilion of the old Governor was the safest place for that cruel murder.'
'If we had left the tribunal an hour or so earlier that morning when we went to visit the country estate for the first time', Tao Gan exclaimed, 'we could have prevented this crime! Mrs. Lee must have left there shortly before our arrival!'
'Fate decided that just that morning Mrs. Yoo would come to see me', Judge Dee said gravely. 'Later, when we inspected the entrance to the maze, I saw the footprint of Mrs. Lee or White Orchid. I did not speak about it at the time, for when I stood there looking into the maze an inexplicable terror took hold of me. The soul of that poor girl who had been brutally murdered there only half an hour or so before must have been hovering over me. I also thought I saw the ghost of the old Governor beckon me from the shadows…'
Judge Dee's voice trailed off. He shivered as he recalled those moments of stark terror.
For a while all were silent.
Then the judge took a hold on himself and said in a brisk voice:
'Well, fortunately Ma Joong was in time to prevent a second cruel murder.
'Let us now have our evening meal. Thereafter all of you had better rest a few hours. For all we know there may be a very exciting night ahead of us. It is difficult to predict what those barbarians will do!'
That afternoon Chiao Tai had with quiet efficiency organized the defence of the town. He had posted the best soldiers near the Watergate, and divided the rest over the walls of the city. On his orders the wardens had warned the population that the barbarians might attack the town that night. All able men had been busy assembling large stones and faggots of dry wood on the city wall, and making bamboo spears and iron tipped arrows. Three hours before midnight they would man the walls, every fifty men directed by one professional soldier.
Two soldiers had been posted on the Drum Tower. As soon as the Uigurs approached the river they would beat the huge drum with their thick wooden clubs. The dull roll of that drum would be the sign for lighting the torches on the walls. If the barbarians tried to scale them, they would meet a barrage of heavy stones and flaming faggots.
Judge Dee ate his evening meal in his own quarters. Then he slept for a few hours on the couch in his library.
One hour before midnight Ma Joong, clad in full armour, came to fetch him. Judge Dee put on a thin mailcoat under his robe and took down the long sword of his grandfather that hung on the wall next to his bookshelves. Having placed his official magistrate's cap on his head, he followed Ma Joong.
They rode on horseback to the Watergate.
Chiao Tai was waiting for them. He reported that Sergeant Hoong, Tao Gan and four soldiers were posted on the watchtower of the Chien mansion. They would see to it that not a spark of fire was visible there.
Judge Dee nodded and climbed the steep stone steps to the top of the Watergate. On the battlement a burly soldier, nearly as tall as Ma Joong, stood stiffly to attention. He was carrying a long pole with the Imperial standard on top.
The judge stood himself on the battlement. On his right he had the soldier carrying the Imperial standard, on his left, Ma Joong holding high the staff with the commander's insignia of Judge Dee.
The judge reflected that this was the first time that he was in charge of defending the Empire's boundary against a foreign attack. Looking up at the Imperial standard fluttering in the evening breeze he felt a deep pride