It usually takes me about five books to figure out where I stand with an author — to cover something good, something borrowed, something blue and eventually figure out whether I like the skull beneath the skin of their writing. Impact of Evidence (1954) is my eleventh book by Edith Caroline Rivett — here writing as Carol Carnac, though best-known as E.C.R. Lorac — and represents another example of me not quite figuring her out. Her ideas are interesting, and she demonstrates no small acuity with her characters, but her plotting seems to stall at times and so the book didn’t for me reach the same level of immersion as Crook o’ Lune (1953) from the year before.