He went through to the living room and listened as the message played. Then the caller’s voice. ‘This is Brian Holmes, trying to get in touch with –’

Rebus picked up the receiver. ‘Brian, what’s up?’

‘Ah, caught you. Thought maybe you’d already headed for the hills.’

‘I was just leaving.’

‘Sure you don’t want to drop by the station first?’

‘Why should I?’

‘Because Dr Curt is about to pronounce . . .’

The problem with drowning was that drowning and immersion were two entirely different things. A body (conscious or unconscious) might fall (or be pushed) into water and drown. Or an already dead body might be dumped into water as a means of concealment or to lead the police astray. Cause of death became problematical, as did time of death. Rigor mortis might or might not be present. Bruising on and damage to the body might be the result of rocks or other objects in the water itself.

However, froth from mouth and nose when the chest was pumped down on was a sign that the body was alive when it entered the water. So was the presence in the brain, marrow, kidney and so forth of diatoms. Diatoms, Dr Curt never tired of explaining, were micro-organisms which penetrated the lung membrane and would be pumped around the bloodstream by a still-beating heart.

But there were other signs, too. Silted matter in the bronchial tubes provided evidence of inhalation of water. A living person falling into water made attempts to grip something (a true-life ‘clutching at straws’) and so the hands of the corpse would be clenched. Washerwoman’s skin, the shedding of nails and hair, the swelling of the body – all these could lead to an estimate of the amount of time the corpse had spent in the water.

As Curt pointed out, not all the relevant tests had been completed yet. It would be a few more days before the toxicology tests would yield results, so they couldn’t be sure yet whether the deceased had taken any drink or drugs prior to death. No semen had been found in the vagina, but then the deceased’s husband had provided information that the deceased ‘had trouble’ with the pill, and that her preferred method of contraception had always been the sheath . . .

Christ, thought Rebus, imagine poor old Jack being asked about that. Still, there might be even less pleasant questions to answer . . .

‘What we have so far,’ Curt said, while everyone begged him silently to get on with it, ‘is a series of negatives. No froth from the mouth and nose . . . no silted matter . . . no clenched hands. What’s more, rigor mortis would suggest that the body was dead prior to immersion, and that it had been kept in a confined space. You’ll see from the photographs that the legs are bent quite unnaturally.’

At that moment, they knew . . . but still he hadn’t said it.