The Man on the Balcony

Maj Sjöwall is a Swedish author and translator. She is best known for the collaborative work with her partner Per Wahlöö on a series of ten novels about the exploits of Martin Beck, a police detective in Stockholm. In 1971, the fourth of these books, The Laughing Policeman (a translation of Den skrattande polisen, originally published in 1968) won an Edgar Award from the Mystery Writers of America for Best Novel.They also wrote novels separately.

Per Fredrik Wahlöö (5 August 1926 - 22 June 1975) was a Swedish author. He is perhaps best known for the 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. In 1971, The Laughing Policeman (a translation of Den skrattande polisen, originally published in 1968) won an Edgar Award from the Mystery Writers of America for Best Novel. Wahlöö and Sjöwall also wrote novels separately.