The short story on which it is based was first published in book form in the US in The Regatta Mystery and Other Short Stories in July 1939 and in the UK in Problem at Pollensa Bay and Other Stories in 1991.
Cerpen yang mendasarkannya pertama kali diterbitkan dalam bentuk buku di AS dalam The Regatta Mystery and Other Short Stories pada Juli 1939 dan di Inggris dalam Problem at Pollensa Bay and Other Stories pada 1991.