Per Fredrik Wahlöö (5 August 1926 – 22 June 1975), often identified in English translations as Peter Wahloo – was a Swedish author. He is perhaps best known for collaborative work with his partner Maj Sjöwall on a series of ten novels about the exploits of Martin Beck, a police detective in Stockholm, published between 1965 and 1975. The fourth of the Beck novels, Den skrattande polisen, was published in 1968; a translation of this novel, The Laughing Policeman, won an Edgar Allan Poe Award for Best Novel from the Mystery Writers of America in 1971. Wahlöö and Sjöwall also wrote novels separately. Wikipedia
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