No mention of secondary marks. No notation of anything unusual.
Because he hadn’t seen them. Or had he seen them and dismissed them as artefacts of lividity, of the way the body had been positioned post-mortem?
He pulled out more photographs, spreading them across the desk chronologically: scene photos, transport photos, pre-autopsy documentation, post-autopsy images. The scene photos showed Rebecca’s body positioned on her back, her head turned slightly to the left. The ligature mark was clearly visible even in situ.
But when he looked at the photographs taken after the body had been moved to the mortuary, positioned for autopsy, something shifted. The secondary marks became more visible at certain lighting angles, less so in others. They were real, he was certain now, but their nature remained elusive.
Hart stood again, moving to the bookshelf where he kept his professional library. He selected a volume on forensic pathology published in early 2010, after the Kirkland case. Flipping to the chapter on strangulation, he found what he was looking for: a section on atypical ligature patterns.
In cases where a body is moved or repositioned post-mortem, secondary compression marks may appear that can be mistaken for additional violence or multiple implements…
His heart hammered against his ribs. Could it be that simple? Post-mortem artefact?
But another passage caught his eye:
Ligature marks created by different implements or at different times will show variation in depth, colouration, and cellularresponse. Careful examination of the tissue at a microscopic level is essential to distinguish ante-mortem from post-mortem injury…
Hart returned to his report. He’d noted the microscopic examination, of course. Standard procedure. But his notes were brief, confirming only what seemed evident at the time: ante-mortem injury consistent with fatal strangulation.
He pulled out a hand lens and examined the photographs again, focusing on the secondary marks. They were fainter, yes, but they showed characteristics consistent with ante-mortem injury – the slight swelling, the way the skin had responded to trauma while the heart was still beating.
Two ligatures. Or one ligature applied twice, at different angles.
The implications made his mouth go dry.
If Rebecca Kirkland had been strangled twice, or if the strangulation had been interrupted and resumed, it changed the nature of the crime. It suggested premeditation, a pause between attempts, perhaps even a cooling-off period that contradicted the prosecution’s theory of a crime of passion.
More troubling still: McGregor had consistently claimed he’d found Rebecca already dead when he arrived at her flat that evening. The prosecution had argued he was lying, that the forensic timeline proved she’d died while he was there. But if there had been two separate strangulation events…
Hart’s hands shook as he reached for the supplementary files: witness statements, police reports, crime scene analysis. He found the timeline constructed by the investigation:
6.30p.m. – Rebecca Kirkland was last seen alive by a neighbour
7.45p.m. – Thomas McGregor claims he arrived at Rebecca’s flat
8.15p.m. – McGregor calls emergency services, reports finding Rebecca dead
Time of death estimated: 7.00–8.00p.m.
But if his autopsy findings were incomplete, if he’d missed evidence of multiple strangulation events, that timeline could be wrong. Rebecca might have been attacked earlier, survived the initial assault, only to be killed later by someone else. Or by the same person returning.
The scientific method demanded scepticism and demanded that he consider alternative explanations. Hart forced himself to breathe slowly, to think clearly. What else could explain the marks? What had he overlooked?
He pulled out more case files, searching for comparisons. The Kirkland case hadn’t been his first strangulation, nor his last. He’d examined dozens over the years, each one teaching him something new about the mechanics of asphyxiation, the patterns left by desperate violence.
An hour passed, then two. The light outside began to fade, and Hart switched on the standing lamp in the corner, bathing the study in warm yellow. His coffee had gone cold in its mug, a skin forming on the surface.
Then he found it – another case, from 2009. Caroline Hughes, thirty-one, strangled in her Edinburgh home. Hart had consulted on that case, though it hadn’t been his primary investigation. He’d noted in his report – and here it was, highlighted in his younger self’s decisive hand:
Secondary linear marks present, consistent with repositioning of ligature mid-assault. Suggests interrupted strangulation, possible panic or hesitation by perpetrator.
He’d seen it then. He’d recognised the pattern. So why not with Rebecca Kirkland?
The answer came to him with uncomfortable clarity: he’d seen what he expected to see. McGregor had been the obvious suspect – the boyfriend, recently argumentative, witnessed leaving the scene. The scratches on his hands, the lack of forced entry, the simple brutality of the crime. Everything pointed to him.
And Hart, in his thoroughness and confidence, had given the prosecution the evidence they needed. He’d testified in court, had stood before the jury and explained with certainty how Rebecca Kirkland had died, how the forensic evidence supported the timeline, and how the injuries were consistent with manual strangulation by someone she knew.
He’d sent a man to prison for twenty-five years.
