This Swedish crime-comedy series brings to life Sven Hjerson, a lesser-known detective created by Agatha Christie's fictional author, Ariadne Oliver. Retired and quirky, Hjerson (Johan Rheborg) is pulled into new investigations by TV producer Klara Sandberg (Hanna Alström), whose career needs a spark. The duo tackles murder mysteries with a modern meta-twist, blending classic whodunnit intrigue with contemporary humor across four case arcs, offering a fresh, Scandinavian spin on Christie's detective genre.