Richard wrote a mental diary in his head. Dear Diary, he began. On Friday I had a job, a fiance, a home, and a life that made sense. (Well, as much as an life makes sense). Then I found an injured girl bleeding on the pavement and I tried to be Good Samaritan. Now I've got no fiance, no home, no job, and I'm walking around a couple of hundred feet under the streets of London with the projected life expectancy of a suicidal fruit fly.