The Photographs and the Hidden Identity
Why Didn't They Ask EvansThe changing photographs first misdirect the investigation, then connect the supposed accident to Moira and the criminal scheme.
increasing
Bearing strength in each event
decreasing
A Face in the Pocket

A Face in the Pocket
The image Bobby sees
While covering the dead man’s face, Bobby accidentally draws out a photograph of a young woman with a haunting expression. He returns it to the pocket without inspecting the dead man’s face beside it.
An overlooked clue
The image stays in Bobby’s memory because it seems vivid and distinctive. His failure to look more closely delays recognition of the woman and allows the killers’ substitution to go unnoticed.
The Printed Photograph

The Printed Photograph
A newspaper discrepancy
Bobby sees a newspaper image presented as the photograph that identified the dead man. He realizes it is not the picture he saw in the pocket.
Suspicion takes shape
Frankie and Bobby reason that someone must have replaced the original image with another. The photograph transforms a vague unease about the inquest into a concrete problem of identity.
The Cayman Image

The Cayman Image
An implausible portrait
The replacement photograph depicts Amelia Cayman, whose appearance differs sharply from Bobby’s memory of the woman’s portrait. The newspaper reproduction makes the image harder to assess but confirms that the pictures are distinct.
A false identification
The Caymans have used Amelia’s portrait to support their claim that the dead man is Alex Pritchard. The image conceals both the victim’s true identity and the connection that his original photograph might have exposed.
The Woman at the Grange

The Woman at the Grange
A familiar face in danger
Bobby slips into the grounds of The Grange and encounters a terrified young woman. He recognizes her as the original of the photograph he found on the dead man.
The clue acquires a name
The woman is Moira Nicholson, living under the name associated with the portrait. Her presence links Alan Carstairs to The Grange and challenges the false identity accepted at the inquest.
The Substitution Explained

The Substitution Explained
A calculated exchange
Roger admits removing Moira’s photograph and other identifying material from Alan Carstairs’s pockets. He plants the image of a gang associate, enabling the Caymans to identify the body as Alex Pritchard.
A clue turned against its makers
The deception works because the invented sibling relationship appears ordinary and the inquest accepts the portrait as proof. What seemed to be a simple photograph error becomes evidence of a planned cover-up.
Immediately after the stranger dies
The morning after the inquest
During the early investigation in London
After Bobby arrives in Staverley
Near the end, in Roger’s confession