Tatort S2014E21 - Lannert - 14 - Freigang

Holger Drake, the main suspect in the murder of Irina Meinert, was in prison at the time of the crime. So how did his DNA get to the crime scene? Thorsten Lannert and Sebastian Bootz are clear: either something is wrong with the traces – or with the prison. The fact that two years earlier another murder case remained unsolved because the main suspect was in the same prison speaks for the latter. From the outside there is no gap in the prison systemverifiable. That's why Thorsten Lannert gets a job in prison as Peter Seiler and is now supposed to find out undercover what's wrong in prison. The more he is accepted there, the clearer it becomes that corrupt structures have developed. Lannert tries to get at security chief Franke from the inside, while Bootz puts pressure on Holger Drake from the outside. And meanwhile the danger grows that Mole Lannert will be exposed...