A horrific sight rocks Malouf, Koko and the rookies to the core: The body of Inspector Kelting, their colleague and instructor, is lying on the ground in front of an apartment building. The investigators analyze every trace and clue. He was definitely murdered. Malouf throws himself into Kelting’s old cases. Who could be harboring a desire for revenge? A neighboring urban gardening project arouses suspicion – Kelting was obviously known there.