 First appearing on the spin-off series in "Torchwood" episode "Reset", fellow companion Jack Harkness establishes Martha's credibility to her new peers, slyly commenting upon her vast experience.John Barrowman noted that in many ways Martha entered Torchwood as their superior as being employed with UNIT placed her in a higher authority.In the same episode, Martha notes that an "impeccable source" recommended her employment to UNIT, implying the Doctor holds the highest level of faith in Martha's capability.