Unfinished Portrait is a semi-autobiographical novel written by Agatha Christie and first published in the UK by Collins in March 1934 and in the US by Doubleday later in the same year.

But, while on an exotic island, Celia meets Larraby, a successful portrait painter, who spends a night talking with her, and learning her deepest fears.

"[1] The New York Times Book Review of 9 December 1934 said of the plot construction of Celia telling Larraby her life history that, "This literary device seems artificial and unnecessary at first, but is effectively used in the ending."

And in Celia's Grannie it introduces a grand old lady – an indomitable Victorian with a keen love of life, a fine hand for managing 'the men', and a gruesome interest in the final takings-off of the many friends and relatives whom she survived.

The blurb on the inside flap of the dustjacket of the first edition reads: In a Spanish garden overlooking the sea an artist comes upon a solitary woman.