<P> The killer is revealed to be Kirsten Lindstrom , the Argyles ' middle - aged housekeeper . Jacko had persuaded the plain Kirsten that he was in love with her , and persuaded her to murder his adoptive mother under cover of a `` foolproof '' alibi to steal some much needed money . But once Kirsten learned that Jacko was secretly married , she decided not to cover for Jacko , abandoning him to his fate . </P>
<P> The killer is revealed to be Kirsten Lindstrom , the Argyles ' middle - aged housekeeper . Jacko had persuaded the plain Kirsten that he was in love with her , and persuaded her to murder his adoptive mother under cover of a `` foolproof '' alibi to steal some much needed money . But once Kirsten learned that Jacko was secretly married , she decided not to cover for Jacko , abandoning him to his fate . </P>
who is the killer in the book ordeal by innocence
who is the killer in the book ordeal by innocence
Kirsten Lindstrom
Kirsten Lindstrom