oâclock the following day. He sat down and logged on to his terminal and checked his email. There was nothing of any importance. He flicked through his copy of the Straits Times. The story of Celia Wongâs suicide was on page seven, a mere three paragraphs that looked as if they had come straight from the police blotter. His telephone rang and he picked it up. âInspector Zhang? This is Dr. Choi from the Forensic Medicine Division.â
âDr. Choi. How are you?â Inspector Zhang had known Maggie Choi for almost fifteen years but she always used his title when she addressed him and he always returned the courtesy. She was in her late thirties, a slightly overweight lady with a moon face and like Inspector Zhang hampered by poor eyesight.
âI am fine, Inspector Zhang, thank you for asking. I am calling about the body that you sent to us last night.â
âAh yes. Celia Wong.â
âThatâs correct. Twenty-seven-year-old Chinese female. Iâm calling to notify you about the cause of death.â
âI donât think thereâs much doubt about that, Dr. Choi,â said Inspector Zhang. âI was there when she fell.â
âOh, her injuries were catastrophic, there is no question of that,â said the doctor. âBut they werenât the cause of death. They were post-mortem.â
âThatâs interesting,â said the inspector, sitting up straight.
âDrowning was the cause of death.â
âDrowning?â repeated Inspector Zhang, unable to believe his ears.
âHer lungs were full of water.â
As Inspector Zhang took down the details in his notebook, Sergeant Lee arrived, carrying a cup of Starbucks coffee. Inspector Zhang put down the phone and blinked at his sergeant. âSergeant Lee, we have ourselves a mystery,â he said.
âA mystery?â repeated Sergeant Lee.
âAn impossible mystery,â said Inspector Zhang, âand they are the best.â He took off his spectacles and leant back in his chair as he polished the lenses with his handkerchief. âAn impossible mystery is just that, a mystery where something impossible has happened. In this case, Mrs. Wong jumped from the building but the fall did not kill her.â
âIt didnât?â
âAccording to the Forensic Medicine Department, Mrs. Wong drowned.â
âBut thatâs impossible.â
âExactly,â said Inspector Zhang. âThat is why I said we have an impossible mystery.â He put his glasses on and steepled his fingers over his stomach. âThe impossible mystery was a feature of the golden age of detective fiction, where an amateur sleuth or professional investigator would be called in to examine a crime that had been committed in an impossible manner. Some of the best were written by Agatha Christie, Ellery Queen and the great John Dickson Carr. And we mustnât forget Sir Arthur Conan Doyle, of course, and his immortal Sherlock Holmes. And now, Sergeant Lee, you and I have a real life impossible mystery to solve.â
âSo you now suspect foul play?â asked Sergeant Lee.
âHow could it not be?â asked Inspector Zhang.
âBut Mrs. Wong told you that she was going to kill herself, and then she did.â
âYou think that she managed to drown herself as she fell? That is very unlikely. Impossible, in fact.â He stood up. âFirst we must return to the scene of the crime, because that is what I think we have now. A crime.â
Inspector Zhang drove them to River Valley and parked in a multi-storey car park. This time there was a doorman on duty and he buzzed them in. His name was Mr. Lau and he told the detectives that he worked from eight oâclock in the morning until six oâclock in the evening. He was in his sixties, a small man with a bald head and a mole the size of a small coin on his chin. Inspector Zhang showed him a photocopy of Mrs. Wongâs