Why did they not stop there? Why not let John Darwin “die” in the records, leave Anne living in Seaton Carew as a widow on her pension income, and not pursue the Panama ambition?
The answer, as best as can be reconstructed from available accounts, is that the scheme’s internal logic made that static version unsustainable. John Darwin could not live indefinitely in a bedsit next door to his wife without encountering people who knew him, or without the accumulation of small risks eventually producing a discovery. The house next door arrangement was, from the beginning, a temporary solution. The Panama plan was the exit that the scheme had always required: a place far enough away that the two of them could live openly, without concealment, under different identities.
The property purchases in Panama—the apartment in El Dorado, the estate at Escobal—were therefore not an optional addition to the scheme. They were the original goal, the endpoint that justified the elaborate infrastructure of false death and hidden passageways and fraudulent pensions. The entire scheme was, in a sense, designed to generate the resources for the Panama exit and to buy time until that exit could be executed.
The transfer of number 4 to Mark Darwin, and the subsequent sale with proceeds to Panama, was the point at which the scheme’s money laundering dimension became most direct and most traceable. The Court of Appeal judgment notes this element as one of the clearest examples of Anne Darwin’s active participation: she had transferred the property to her son, knowing that the proceeds would go to Panama, knowing that those proceeds represented the returns of a fraud scheme.