By the Pricking of My Thumbs By the Pricking of My Thumbs By The Pricking of My Thumbs is a work of detective fiction by Agatha Christie and first published in the UK by the Collins Crime Club in November 1968 and in the US by Dodd, Mead and Company later in the same year. The UK edition retailed at twenty-one shillings (21/-) and the US edition at $4.95. It features her detectives Tommy and Tuppence Beresford. Tommy and Tuppence were unusual in that they aged from novel to novel unlike Miss Marple and Hercule Poirot, whose age remained more or less the same from Christie's
Copyright protection for fictional characters faire" doctrine holds that those scenes or aspects that are indispensable to the story or are standard expressions cannot be copyrighted. This limitation also applies to fictional characters. Therefore, stock characters or archetypical and hackneyed elements are disqualified from protection by virtue of the fact that they are not unique in their expression. In cases of copyright infringement of a fictional character, a two-step test developed by the American Courts has to be satisfied. Firstly, it must be established that the character in question is capable of being copyrighted. Secondly, it must be demonstrated that there has been an infringement