Is Herr und Frau Bulle coming back?

Yvonne Wills  is a successful commissioner, while husband Heiko is in demand as a case analyst. So far, both have managed to separate marriage and work quite well. However, this is no longer possible after Yvonne's chief, crime director Pede, puts her together on a murder case. The joy at Yvonne is limited, but Heiko is really excited to be able to spend more time with his wife.