Lt. Isaiah McQuade (portrayed by the late Mike Hodge) is a police detective who works very well with the Ghostwriter Team. He never knows how the team does what they do.
Sometimes he does have it in for the team:
At one time in the season two opener "Am I Blue?", McQuade blames Gaby for stealing the spaceship Cutesie and subdued Alex and Lenni for almost messing up a police stakeout.