Colin MacDonald

In the novel The Murder of Roger Ackroyd, Colin MacDonald was one of two moneylenders which Mrs Cecil Ackroyd, who was deep in financial difficulties, tried to deal with. They offered loans "by note of hand alone". She wrote to one of them about a loan but received a reply that there were "difficulties".

One researcher noted that the passage this name was brought up showed that at that time, Christie "did not hesitate to refer to Jewish people in a negative way." Mrs Ackroyd noted that both of the moneylenders had scottish names which was quite a coincidence. Dr Sheppard responded that it was hardly a coincidence, adding, "They are usually Scotch gentlemen, but I suspect a semitic strain in their ancestry."

Both moneylenders do not appear in the novel in person. They are only mentioned by Mrs Ackroyd.