Murder within murder

Murder Within Murder comes uncomfortably close to home when Amelia Gipson is found dead, slumped over her books at a desk in the New York Public Library. Miss Gipson had recently been hired by Pamela and Jerry North to do research into some spectacular, still unsolved murders, and she had just uncovered information overlooked by the police. Had the murderer returned to bury the evidence once and for all? Or were there mysteries in Miss Gipson's past that could explain her death? Working alongside Lt. Bill Weigand of N.Y.C. Homicide, Mr. and Mrs. North do some research of their own into the life of their late assistant. The intrigue is enlivened by sophisticated humor and the antics of a new cat, named Martini.