Natalie unwittingly helps a bicycle thief and ends up being implicated in the robbery. But in investigating the theft, the perpetrator shoots through his door, wounding Monk in the leg. From then on we see Monk at his absolute worst, belittling and attacking Natalie time after time. She is so full of guilt that she almost dies trying to appease him. This episode is rather hard to watch. i enjoyed Bradley Witford's character as an experimental biologist.