Seattle: Partisan Press, 1980. 125p., the last twenty pages of which are an "annotated bibliography" of similarly useful books, preface, introduction, conclusion, illustrations, good first English-language edition trade paperback in pictorial wraps though perfectbound and thus subject to breaking apart when fully opened (we have had other copies).
How police detection works so you will know what clues not to leave behind. "First published in German in Zurich in 1977.. This book was originally made available in the 'left jungles' of Zurich, as well as in a few bookstores in the same city. This [Seattle] edition enjoys a somewhat wider circulation, thanks in no small part to the wonders of American 'repressive tolerance'."