It can sometimes take a long time for the truth to come to light. Very long, in fact. Arndt Schumacher from the Lübeck murder commission is reopening a 30-year-old murder case. A witness from back then recalls new details of the crime. When it becomes known that the alleged murderer is still in prison, doubts arise about her accounts. As a result, Schumacher's boss wants to take the case away from him. But Schumacher wouldn't be Schumacher if he gave up now. He suspects that there is more to the case than previously thought. But does he realize the dangerous game he has gotten himself into? The fourth case of the Lübeck murder commission is a must-read for thriller fans.