Dead Man Walking is an episode from Series 22 that first aired on 16 December 2005.
A mechanic is found brutally murdered in his garage, but the team are baffled as the crime appears motiveless. His best mate and business partner is visibly upset and appear to commit suicide, but there is no body. Have they faked their own death. Has someone been lying about their past? Who is the killer? Burke, Fraser, Reid and Ross investigate the murder-suicides.