Gin and daggers a Murder, she wrote mystery

"While in London to attend a convention of mystery writers, an old friend and colleague of Jessica Fletcher's is murdered, and she must solve this haunting crime."
"Jessica Fletcher, star of "Murder she wrote", is in London to give the keynote speech at the annual convention of the International Society of Mystery writers. She has also been invited to a weekend house party at the house of her friend, Margery Ainsworth. When Margery is found dead, Jessica must solve the mystery of her friend death and whether the book "Gin and daggers" was really written by Margery."@en
"Jessica Fletcher travels to London to make a keynote address to a convention of mystery writers. While there, she stays with her old friend and colleague, Marjorie Ainsworth, who has just released a novel, "Gin and daggers". Then suddenly Marjorie is herself murdered, and Jessica must solve this haunting crime."
"While Jessica Fletcher is in London she is invited by an old friend, Marjorie Ainsworth, to attend a weekend party in the country. Marjorie is murdered by someone who slipped into her bedroom late at night and plunged a dagger into her heart. Jessica steps in to solve the murder, which involves a puzzle over the authorship of a new book, the attentions of a handsome inspector from Scotland Yard and an introduction to a side of London she has never seen before."@en