A Cold Treachery is the seventh mystery in the Inspector Ian Rutledge series by the mother-son writing team of Charles Todd. The Scotland Yard detective must discover who brutally murdered five members of a family, and why. Like the others in the series, A Cold Treachery (Bantam, 2005) features intelligent writing, richly realized characters and a gripping storyline set in post-World War I England. Rutledge’s flawed but endearing persona adds a fascinating layer to these finely crafted whodunits. Read them in order or not, the books are addictive. With 14 in the series, you’ll have plenty of good reading before withdrawal sets in.