Georg Wilsberg deals in old books, but his real passion is solving crimes. Ever since he lost his license to practice law, he's been working on the side as a slightly chaotic private eye, aided by a plucky female student, a meticulous auditor and a police inspector. Leonard Lansink has been playing Wilsberg since 1998 and has turned it into one of ZDF's most durable and light-hearted crime series.
Wilsberg's somewhat abrasive ways sometimes jeopardize his investigations. But that doesn't stop him from pursuing suspects no matter how rich, esteemed or powerful they are - a dangerous attitude in a conservative town like Münster. Luckily he has his friends and helpers to soften his rough edges. His best friend and important contact in the first 14 installments of this cycle is Manni Höch, a civil servant often plagued by his conscience.
From episode 15, Ekkehard Talkötter takes over, a tax auditor who happens to share Wilsberg's passion for solving crimes, but is much more self-confident and enterprising than Manni. Alex is Wilsberg's foster daughter, who studies law and takes care of the shop when Wilsberg is out tracking criminals. And then there's Anna Springer, head of Münster's homicide department, who inevitably curses her good friend Wilsberg – officially for sticking his nose into her business, but secretly because he's usually more successful than she is.