Classic crime from one of the greats of the Detection Club

If you ever need my help, I’ll be there. But by the time he arrived, she had already disappeared...

Arthur Crook and Miss Pinnegar meet by accident and take to each other on sight, parting with mutual appreciation and an invitation by the detective to call on him professionally should she ever need help - unlikely as that may be.

But when Miss Pinnegar receives a visit, it threatens to shake her life to the very foundations. She sends Crook an SOS and he comes at the double, but by then Miss Pinnegar has already disappeared . . .