SpecialtiesWhat they bring
Pattern recognition, environmental evidence, chain-of-proof discipline. He is a private specialist, not an arresting officer. His reports have to separate observation from inference, and his need for a defensible chain of evidence sometimes puts him at odds with the urgency of the people he is trying to help.
Working styleHow they approach a case
Precise, methodical and skeptical. He tries to disprove the dramatic theory before accepting it.
LimitationPressure point
His evidentiary caution can become emotional distance or delay when action is needed.
Book 1Relevance in The Water Line
In The Water Line, Ethan refuses the easy answer and keeps the case grounded in what the plume, the records and the missing samples can actually prove.