SpecialtiesWhat they bring
Interrogation, surveillance, security and corporate investigations. His experience helps him recognize when a witness’s account or a company’s records need closer scrutiny. He no longer carries federal powers: interviews depend on cooperation, and compulsory evidence gathering belongs to the appropriate authorities.
Working styleHow they approach a case
Blunt, economical and skeptical of polished narratives.
LimitationPressure point
He can interpret concealment too quickly when confusion or bureaucracy might still explain the mess.
Book 1Relevance in The Water Line
In The Water Line, Marcus keeps pressure on the human side of the case, especially when the dead technician’s story begins to look less and less accidental.