Mad Hatter

Prothero shook his head. ‘I’ve no reason to deny it. I injected a small quantity of atropine to relieve his asthma symptoms. It is a recognised way of preventing constriction of the bronchioles by inhibiting the action of the nervous system. Used by a physician, it is perfectly safe.’

‘So I understand, sir,’ said Cribb. ‘It’s a pity you had none with you on the day the boy died. An injection then might have saved him. But, of course, you weren’t to know. Tell me, was it on the Sunday before we met at Brill’s that you gave Guy his injection? That’s what I’ve got in my notes.’

‘Sunday? Yes, it would have been.’

‘That’s what the boy said. I can understand that he must have been in somewhat of a state that morning, with Bridget lying dead under the promenade, and your wife and second son being sent off double-quick to Dorking. I don’t believe Mrs. Prothero knew what had happened, but I’m quite sure you did. A very anxious time for Guy, and most considerate of you to give him an injection, even if he was ungrateful later in the week when I met him. I suppose you must have been in quite a wax yourself on that Sunday morning, knowing what the boy had done and wondering what to do about it. Not at all surprising that the injection should have left a bruise. Was your hand shaking, Doctor?’

‘I have no recollection,’ said Prothero.

‘I didn’t expect you to have, sir, particularly as there was no sign of the mark fourteen days after, when the boy’s body was examined. These things heal quickly, especially in the young. You don’t mind if I have the last doughnut? It’s more than I could do to leave it.’

‘What was the other thing that emerged from the statements?’

Cribb chewed heartily and used the uneaten portion of the doughnut to emphasise his points. ‘Ah, yes. The length of your holiday. Your wife said you were there for three weeks, but you stayed for four.’

‘There were things to attend to, consequent upon the death of Bridget.’

Cribb smiled. ‘I can well imagine, Doctor. But once the severed hand was discovered in the aquarium, on the Monday, there wasn’t much prospect of disposing of the body, which was already dismembered. Just time, perhaps, to bury the head somewhere else in hope of preventing identification. But by the middle of the week the rest of the parcels were found. If you’d left the town at once, suspicions might have been aroused, I agree, but you could have left quite openly at the end of the week, when your holiday was due to finish. Instead, you extended it by a week.’

‘It was only right that I should see things through, as Bridget’s employer.’

Cribb dismissed this with a quick shake of the head. ‘It was obvious to anyone that the matter had passed out of your control. Bridget was the subject of a murder inquiry, and an inquest was certain to be arranged. You could have been waiting for months if that was why you were still in Brighton. No, I think your motive was another one. You stayed there because of Guy, not Bridget. You knew he was going to die on the second Sunday after the murder. It was quite contrary to your plans that he should die at home in Dorking. There would have been no end of questions and suspicions. Instead, he died on the way home, in a public hotel, as you so rightly said.’

‘I am supposed to have known all this? How do you imagine I possessed such clairvoyance, Sergeant?’

Cribb wiped his fingers with the table-napkin. ‘No clairvoyance to it, sir. Timing, that’s all. Fourteen days from the injection, Sunday to Sunday.’

‘This is too preposterous!’ said Prothero. ‘Am I seriously supposed to have killed my own son with an injection of atropine that took effect two weeks after it was given, caused a violent death with all the symptoms of asthma and left no trace in the body? You had better spend some more time with the medical books, Sergeant. You have a lot to learn.’

‘I appreciate that, Doctor. So when I formed my suspicions, I went back to the library to read all that I could find on the subject of injections-and the deuce of a lot there is. What caught my interest in particular were the inoculation experiments being carried out by Dr. Pasteur and others. In fact, it seems that half the doctors in Europe are busy pumping germs into dogs and guinea-pigs and publishing their results.’

Dr. Prothero sighed in a long-suffering way. ‘Perhaps what you fail to appreciate, Sergeant, is that such experiments are intended to give protection against disease, in the same way as vaccination. Now that the organism responsible for typhoid fever has been discovered in Germany, for example, it is possible that we shall soon be able to inoculate the populace and so limit the spread of the disease. Experiments are already being conducted to that end.’

‘So I read, sir. But it isn’t quite so straightforward, is it? There are problems. While I was reading of these experiments I several times came across something the doctors describe as “acute respiratory shock”, which seemed to have nothing at all to do with the disease under investigation. An animal that had been injected would suddenly appear to suffer extreme difficulty in breathing, followed by convulsions which frequently ended in death. Now this interested me a lot, so I went back to Harley Street to see if someone could explain a little more about it in simple terms comprehensible to a member of the Force, such as myself.’

‘It is a phenomenon well known among doctors,’ said Prothero.

‘So I learned, sir, so I learned. But not so well known to the public. The medical profession is at pains not to reveal too much about it, since it only arises in connection with inoculation experiments. I have it on authority that a number of human patients are reported to have died in that way after experiments in Germany. It’s liable to hold up mass-inoculation by several years until it’s properly understood. But even if the doctors can’t explain why it happens, they understand the conditions that are conducive to it.’

‘The vaccines used in the German experiments were prepared with chick embryos, and the patients who died were sensitive to eggs. I don’t know where this is leading us, Sergeant.’

‘Don’t you, sir? Well, as I understand it, the kind of violent reaction the doctors call acute respiratory shock can be induced in the laboratory. It was done as early as 1839 by the famous French physiologist, Francois Magendie, injecting dogs with egg-white. He discovered that two injections of egg-white at an interval of fourteen days produced acute respiratory shock. After the second injection the dogs died within five minutes. Now the curious thing is that egg-white isn’t what you’d call a death-dealing substance. In fact, it’s usually regarded as an antidote. It was obviously something to do with the period between the injections, because dogs injected after one week suffered no effect at all. More recently, a series of experiments on guinea-pigs produced the same dramatic result when they received a second injection of dog-serum.’

‘You have been busy, Sergeant.’

‘So the German doctors now believe that the acute respiratory shock in their patients was a similar reaction. The patients who died reacted to the vaccine, as you suggest, but some two weeks before receiving the injection they had become sensitised-is that the word? — to eggs, perhaps by eating them in some form, possibly even in a cake. When they were injected with the vaccine a fortnight later, the effect was as sudden and violent as if they had been given strychnine-except, of course, that the post mortem examination showed only the kinds of symptoms associated with death from chronic asthma.’

‘Oh, it’s eggs, is it?’ said Prothero. ‘I murdered my son with a boiled egg, did I-or was it a Madeira cake?’

‘If you’ll kindly allow me to go on,’ said Cribb, ‘you’ll see that I’m suggesting no such thing. People can be sensitive to other things besides eggs. You’ll allow that asthma results from reactions to certain substances and emanations?’

‘I can hardly deny it, having written a paper on the subject. Hay, pollen, ipecacuanha, bedfeathers, house- dust. A patient may be affected by any one of these, or something else. My son was sensitive to pollen.’

‘Really, sir?’ said Cribb. ‘Now suppose an asthma patient were discovered to be vulnerable to one of the substances you mention, rather as those Germans were sensitive to egg-white, and someone injected them with a small amount of the substance. What would the result be, do you think?’

‘Quite neutral, I should think. The substances affect the breathing, not the blood.’

‘Ah, but what if a second injection were given two weeks later?’

‘That would be a dangerous thing to try, Sergeant. It might well result in the phenomenon you have described.’ Prothero leaned forward across the table, ‘But if that was how it happened, you would have found a recent injection-mark on my son’s body. There was none-in spite of the inordinately careful examination made by the doctors at the post mortem.’

‘That’s where my theory foundered,’ said Cribb, ‘until I took professional advice. I put the case to my Harley Street specialist-hypothetically, of course, with no names mentioned. If a man with the specialised knowledge of