Core FBI team member who searches for missing individuals under tight time constraints. Participates in a 2007 crossover episode with Gil Grissom from CSI.
Jack guides Martin from rookie to independent agent.
Romantic tension builds across seasons, culminating in reconciliation.
Vivian oversees the team, creating tension but ultimately supporting Jack.
Jack integrates Elena into the team and trusts her with field operations.
Occasional clashes over investigative approaches and personal stress.
Explore the full interactive character relationship map of Without a Trace