When Adrian Monk goes to Fire Company 53 of the SFFD to have his smoke detectors checked, being blinded by a person who murders a firefighter was probably the last thing he expected to get out of his visit. He despairs his loss of eyesight, but with the encouragement of his companions, he is able to use his other senses to detect. Soon he proves that the incidents at the firehouse are connected to the death of a young woman in a fatal house fire a few blocks away just a few minutes earlier. All in all, this episode is rolling from start to finish.
In fact, I like this episode so much that in many of my own variants on one of Lee Goldberg's Monk novels, I try to incorporate the basic plot elements of this episode in.