In James Patterson's book The Angel Experiment, the quote "Excellent. They were flammable." highlights a situation involving the characters or objects that are highly combustible. This phrase suggests a sense of danger or a critical moment where the potential for fire or destruction is imminent. It emphasizes the perilous circumstances the characters might be facing.

The quote adds to the tense atmosphere of the story, possibly describing the nature of a substance, creature, or situation that is easily set ablaze. It underscores the suspense and urgency that are central themes in the book, engaging readers with a sense of risk and unpredictability in the narrative.